xb popular

Tags

blue tongue

1boy 2010s 2016 animated_skeleton begging begging_for_more blue_blush blue_tongue blush bottom_sans clothed clothing dark_background disembodied_hand disembodied_hands ectotongue english_text fangs groping hands hands_behind_head heart-shaped_pupils heart_eyes male male_focus male_only malesub moaning monster penis pleasure_face sans sans_(undertale) shirt_up simple_background skeleton soul soul_sex spontaneouslynsfw submissive submissive_male sweat text tongue tongue_out uke_sans undead undertale undertale_(series) visible_breath
1boy 2010s 2016 animated_skeleton begging begging_for_more blue_blush blue_tongue blush bottom_sans clothed clothing dark_background disembodied_hand disembodied_hands ectotongue english_text fangs groping hands hands_behind_head heart-shaped_pupils heart_eyes male male_focus male_only malesub moaning monster penis pleasure_face sans sans_(undertale) shirt_up simple_background skeleton soul soul_sex spontaneouslynsfw submissive submissive_male sweat text tongue tongue_out uke_sans undead undertale undertale_(series) visible_breath
2020s 2021 2boys 2d 2d_(artwork) animated_skeleton blue_blush blue_tongue blush bottom_sans digital_media_(artwork) duo ectotongue fellatio genitals grabbing_penis licking licking_penis male male/male male_focus male_only monster oral orange_penis penis penis_grab pixiv pixiv_id_42770757 sans sans_(undertale) sex simple_background skeleton solo_focus submissive submissive_male sweat third-party_source tongue uke_sans undead undertale undertale_(series) unseen_male unseen_male_face upper_body video_games yaoi
2020s 2021 2boys 2d 2d_(artwork) animated_skeleton blue_blush blue_tongue blush bottom_sans digital_media_(artwork) duo ectotongue fellatio genitals grabbing_penis licking licking_penis male male/male male_focus male_only monster oral orange_penis penis penis_grab pixiv pixiv_id_42770757 sans sans_(undertale) sex simple_background skeleton solo_focus submissive submissive_male sweat third-party_source tongue uke_sans undead undertale undertale_(series) unseen_male unseen_male_face upper_body video_games yaoi
1boy 2010s 2015 2d 2d_(artwork) animated_skeleton ass bad_id bad_tumblr_id blue_background blue_tongue bondage bottom_sans bound bound_legs completely_nude completely_nude_male digital_media_(artwork) ectopenis ectotongue genitals inactive_account legs_apart male male_focus male_only monster noxiousaberration nude penis sans sans_(undertale) simple_background skeleton submissive submissive_male tentacle third-party_source tied_arms tied_up tongue tongue_out tumblr uke_sans undead undertale undertale_(series) video_game_character video_games
1boy 2010s 2015 2d 2d_(artwork) animated_skeleton ass bad_id bad_tumblr_id blue_background blue_tongue bondage bottom_sans bound bound_legs completely_nude completely_nude_male digital_media_(artwork) ectopenis ectotongue genitals inactive_account legs_apart male male_focus male_only monster noxiousaberration nude penis sans sans_(undertale) simple_background skeleton submissive submissive_male tentacle third-party_source tied_arms tied_up tongue tongue_out tumblr uke_sans undead undertale undertale_(series) video_game_character video_games
2018 2boys 2d animated_skeleton blindfold blindfolded blue_tongue bondage bottom_sans bound bound_arms bound_wrists brother/brother brothers clothed clothed/nude clothing collar comic comic_panel digital_media dominant dominant_male domination duo ectopenis ectotongue english_text fontcest imminent_fellatio imminent_oral incest lowest-of-dirt male male/male male_only maledom monster nude orange_penis papyrus_(undertale) papysans partially_colored penis sans_(undertale) silhouette skeleton submissive text tied_arms tied_up tongue top_papyrus undead undertale undertale_(series) unzipping_pants video_game_character video_games white_background yandere yaoi
2018 2boys 2d animated_skeleton blindfold blindfolded blue_tongue bondage bottom_sans bound bound_arms bound_wrists brother/brother brothers clothed clothed/nude clothing collar comic comic_panel digital_media dominant dominant_male domination duo ectopenis ectotongue english_text fontcest imminent_fellatio imminent_oral incest lowest-of-dirt male male/male male_only maledom monster nude orange_penis papyrus_(undertale) papysans partially_colored penis sans_(undertale) silhouette skeleton submissive text tied_arms tied_up tongue top_papyrus undead undertale undertale_(series) unzipping_pants video_game_character video_games white_background yandere yaoi
1:1 1:1_aspect_ratio 1cuntboy 2020s 2023 animated_skeleton anon anonymous anonymous_male blue_blush blue_clitoris blue_pussy blue_tongue blush bottom_sans clitoris crowd crown cuntboy cuntboy_focus cuntboy_penetrated ectopussy ectotongue group kissing kissing_cheek male male/cuntboy monochrome monster penetration purplebluepen45 pussy sans sans_(undertale) sex skeleton socks solo_focus tongue tongue_out uke_sans undead undertale undertale_(series) vaginal vaginal_penetration vaginal_sex yaoi youfoundta
1:1 1:1_aspect_ratio 1cuntboy 2020s 2023 animated_skeleton anon anonymous anonymous_male blue_blush blue_clitoris blue_pussy blue_tongue blush bottom_sans clitoris crowd crown cuntboy cuntboy_focus cuntboy_penetrated ectopussy ectotongue group kissing kissing_cheek male male/cuntboy monochrome monster penetration purplebluepen45 pussy sans sans_(undertale) sex skeleton socks solo_focus tongue tongue_out uke_sans undead undertale undertale_(series) vaginal vaginal_penetration vaginal_sex yaoi youfoundta
2018 2boys 2d animated_skeleton arm_grab big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male biting biting_shoulder black_background bleeding blood blue_blush blue_tongue blush bottom_sans brother/brother brothers chromatic_aberration clothed clothed/nude clothed_male clothing dark_background digital_media dominant dominant_male drooling duo ectotongue edit fangs fontcest glowing glowing_eye incest intraspecies kneel larger_male long_image lowest-of-dirt male male/male male_only maledom malesub monster nude nude_male orange_eye papyrus_(undertale) papysans sans_(undertale) sequential sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom submissive submissive_male third-party_edit tongue tongue_out top_papyrus undead undertale undertale_(series) undertale_fanfiction video_game_character video_games yaoi
2018 2boys 2d animated_skeleton arm_grab big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male biting biting_shoulder black_background bleeding blood blue_blush blue_tongue blush bottom_sans brother/brother brothers chromatic_aberration clothed clothed/nude clothed_male clothing dark_background digital_media dominant dominant_male drooling duo ectotongue edit fangs fontcest glowing glowing_eye incest intraspecies kneel larger_male long_image lowest-of-dirt male male/male male_only maledom malesub monster nude nude_male orange_eye papyrus_(undertale) papysans sans_(undertale) sequential sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom submissive submissive_male third-party_edit tongue tongue_out top_papyrus undead undertale undertale_(series) undertale_fanfiction video_game_character video_games yaoi
2018 2boys 2d animated_skeleton arm_grab big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male biting biting_shoulder black_background bleeding blood blue_blush blue_tongue blush bottom_sans brother/brother brothers chromatic_aberration clothed clothed/nude clothed_male clothing dark_background digital_media dominant dominant_male drooling duo ectotongue edit fangs fontcest glowing glowing_eye incest intraspecies kneel larger_male long_image lowest-of-dirt male male/male male_only maledom malesub monster nude nude_male orange_eye papyrus_(undertale) papysans sans_(undertale) sequential sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom submissive submissive_male tall_image third-party_edit tongue tongue_out top_papyrus undead undertale undertale_(series) undertale_fanfiction video_game_character video_games yaoi
2018 2boys 2d animated_skeleton arm_grab big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male biting biting_shoulder black_background bleeding blood blue_blush blue_tongue blush bottom_sans brother/brother brothers chromatic_aberration clothed clothed/nude clothed_male clothing dark_background digital_media dominant dominant_male drooling duo ectotongue edit fangs fontcest glowing glowing_eye incest intraspecies kneel larger_male long_image lowest-of-dirt male male/male male_only maledom malesub monster nude nude_male orange_eye papyrus_(undertale) papysans sans_(undertale) sequential sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom submissive submissive_male tall_image third-party_edit tongue tongue_out top_papyrus undead undertale undertale_(series) undertale_fanfiction video_game_character video_games yaoi
2018 2boys 2d animated_skeleton arm_grab big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male biting biting_shoulder black_background bleeding blood blue_blush blue_tongue blush bottom_sans brother/brother brothers chromatic_aberration clothed clothed/nude clothed_male clothing dark_background digital_media dominant dominant_male drooling duo ectotongue fangs fontcest glowing glowing_eye incest intraspecies kneel larger_male lowest-of-dirt male male/male male_only maledom malesub monster nude nude_male orange_eye papyrus_(undertale) papysans sans_(undertale) sequential sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom submissive submissive_male tongue tongue_out top_papyrus undead undertale undertale_(series) undertale_fanfiction video_game_character video_games yaoi
2018 2boys 2d animated_skeleton arm_grab big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male biting biting_shoulder black_background bleeding blood blue_blush blue_tongue blush bottom_sans brother/brother brothers chromatic_aberration clothed clothed/nude clothed_male clothing dark_background digital_media dominant dominant_male drooling duo ectotongue fangs fontcest glowing glowing_eye incest intraspecies kneel larger_male lowest-of-dirt male male/male male_only maledom malesub monster nude nude_male orange_eye papyrus_(undertale) papysans sans_(undertale) sequential sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom submissive submissive_male tongue tongue_out top_papyrus undead undertale undertale_(series) undertale_fanfiction video_game_character video_games yaoi
2018 2boys 2d animated_skeleton arm_grab big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male biting biting_shoulder black_background bleeding blood blue_blush blue_tongue blush bottom_sans brother brother/brother brother_and_brother brothers chromatic_aberration clothed clothed/nude clothed_male clothing dark_background digital_media dominant dominant_male duo ectotongue fangs fontcest glowing glowing_eye incest intraspecies kneel larger_male lowest-of-dirt male male/male male_only maledom malesub monster nude nude_male orange_eye papyrus_(undertale) papysans sans_(undertale) sequence sequential sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom submissive submissive_male top_papyrus undead undertale undertale_(series) undertale_fanfiction video_game_character video_games yaoi
2018 2boys 2d animated_skeleton arm_grab big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male biting biting_shoulder black_background bleeding blood blue_blush blue_tongue blush bottom_sans brother brother/brother brother_and_brother brothers chromatic_aberration clothed clothed/nude clothed_male clothing dark_background digital_media dominant dominant_male duo ectotongue fangs fontcest glowing glowing_eye incest intraspecies kneel larger_male lowest-of-dirt male male/male male_only maledom malesub monster nude nude_male orange_eye papyrus_(undertale) papysans sans_(undertale) sequence sequential sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom submissive submissive_male top_papyrus undead undertale undertale_(series) undertale_fanfiction video_game_character video_games yaoi
2017 2d 4boys animated_skeleton blue_blush blue_tongue blush bottom_sans bukkake clothed clothing cum cum_in_mouth cum_on_tongue digital_media ectotongue fangs finger_in_mouth fontcest gangbang grillby grillsans hand implied_incest lowest-of-dirt male male/male male_focus male_only monster multiple_boys one_eye_closed orange_cum orange_penis papyrus_(undertale) papysans penis red_background sans_(undertale) sanster sex skeleton solo_focus tongue top_gaster top_grillby top_papyrus undead undertale undertale_(series) unseen_character unseen_male unseen_male_face upper_body video_game_character video_games w.d._gaster yaoi
2017 2d 4boys animated_skeleton blue_blush blue_tongue blush bottom_sans bukkake clothed clothing cum cum_in_mouth cum_on_tongue digital_media ectotongue fangs finger_in_mouth fontcest gangbang grillby grillsans hand implied_incest lowest-of-dirt male male/male male_focus male_only monster multiple_boys one_eye_closed orange_cum orange_penis papyrus_(undertale) papysans penis red_background sans_(undertale) sanster sex skeleton solo_focus tongue top_gaster top_grillby top_papyrus undead undertale undertale_(series) unseen_character unseen_male unseen_male_face upper_body video_game_character video_games w.d._gaster yaoi
1girl 2d 2d_(artwork) absurd_res absurdres ass black_body blue_background blue_body blue_tongue breasts darkner deltarune deltarune_chapter_2 digital_media_(artwork) female_only floating_hands genitals high_res humanoid killer._ez looking_at_viewer machine open_mouth pussy robot simple_background tail tasque_manager third-party_source tongue tongue_out two-tone_background undertale_(series) video_game_character video_game_franchise video_games white_body white_border yellow_eyes
1girl 2d 2d_(artwork) absurd_res absurdres ass black_body blue_background blue_body blue_tongue breasts darkner deltarune deltarune_chapter_2 digital_media_(artwork) female_only floating_hands genitals high_res humanoid killer._ez looking_at_viewer machine open_mouth pussy robot simple_background tail tasque_manager third-party_source tongue tongue_out two-tone_background undertale_(series) video_game_character video_game_franchise video_games white_body white_border yellow_eyes
2010s 2017 2d 2d_(artwork) animated_skeleton artist_name blue_blush blue_tongue blush bottom_on_top bottom_sans completely_nude completely_nude_male cowgirl_position crypticcrows digital_media_(artwork) duo ectotongue elemental_creature elemental_humanoid fire_elemental glasses glasses_only gradient_background grillby grillsans humanoid male male/male male_only mari_keiyou_(artist) mk-doodles monster monster_boy nude nude_male orange_body penetration rectangular_eyewear rectangular_glasses sans sans_(undertale) seme_grillby sex skeleton top_grillby uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2017 2d 2d_(artwork) animated_skeleton artist_name blue_blush blue_tongue blush bottom_on_top bottom_sans completely_nude completely_nude_male cowgirl_position crypticcrows digital_media_(artwork) duo ectotongue elemental_creature elemental_humanoid fire_elemental glasses glasses_only gradient_background grillby grillsans humanoid male male/male male_only mari_keiyou_(artist) mk-doodles monster monster_boy nude nude_male orange_body penetration rectangular_eyewear rectangular_glasses sans sans_(undertale) seme_grillby sex skeleton top_grillby uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2018 2boys 2d animated_skeleton ass ass_grab ass_squeeze bed bigger_male black_socks blue_tongue bottom_sans bottomwear duo elemental_creature elemental_humanoid facing_another fire_elemental grabbing_ass grillby grillsans humanoid imminent_sex larger_male male male/male male_only mari_keiyou_(artist) mastery_position mk-doodles monster monster_boy on_bed orange_body pants partially_clothed pink_slippers sans_(undertale) sitting sitting_on_bed skeleton slippers smaller_male socks squeezing_ass tongue tongue_out topless topless_male traditional_media undead undertale undertale_(series) video_game_character video_games yaoi
2018 2boys 2d animated_skeleton ass ass_grab ass_squeeze bed bigger_male black_socks blue_tongue bottom_sans bottomwear duo elemental_creature elemental_humanoid facing_another fire_elemental grabbing_ass grillby grillsans humanoid imminent_sex larger_male male male/male male_only mari_keiyou_(artist) mastery_position mk-doodles monster monster_boy on_bed orange_body pants partially_clothed pink_slippers sans_(undertale) sitting sitting_on_bed skeleton slippers smaller_male socks squeezing_ass tongue tongue_out topless topless_male traditional_media undead undertale undertale_(series) video_game_character video_games yaoi
1boy 2016 2d after_autofellatio after_oral alkipunch alternate_version_available animated_skeleton artist_name ass autofellatio blue_blush blue_penis blue_tongue blush blushing bone closed_eyes clothed clothing cum cum_on_face cum_on_own_face cum_on_self cumshot digital_media ectopenis ectotongue ejaculation erection fangs forked_tongue genitals grabbing_sheets gripping_sheets highres hooded_jacket hoodie humanoid jacket male male_masturbation male_only masturbation monster open_mouth orgasm penis sans_(undertale) sequential skeleton sneakers solo solo_male sweat third-party_source tongue undead undertale undertale_(series) video_game_character video_games
1boy 2016 2d after_autofellatio after_oral alkipunch alternate_version_available animated_skeleton artist_name ass autofellatio blue_blush blue_penis blue_tongue blush blushing bone closed_eyes clothed clothing cum cum_on_face cum_on_own_face cum_on_self cumshot digital_media ectopenis ectotongue ejaculation erection fangs forked_tongue genitals grabbing_sheets gripping_sheets highres hooded_jacket hoodie humanoid jacket male male_masturbation male_only masturbation monster open_mouth orgasm penis sans_(undertale) sequential skeleton sneakers solo solo_male sweat third-party_source tongue undead undertale undertale_(series) video_game_character video_games
2017 2boys 2d anal animated_skeleton bed bedroom black_legwear blue_blush blue_theme blue_tongue blush bodily_fluids bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers closed_eyes clothed clothing digital_media doggy_position door duo ectotongue english_text fluids fontcest from_behind_position hooded_jacket hoodie incest indoors intraspecies jacket male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy motion_lines mounting on_bed orange_blush orange_tongue papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penetration_from_behind sans_(undertale) sex sex_from_behind sibling_incest siblings skeleton spookster teeth text thrusting tongue tongue_out top_papyrus undead undertale undertale_(series) visible_breath yaoi
2017 2boys 2d anal animated_skeleton bed bedroom black_legwear blue_blush blue_theme blue_tongue blush bodily_fluids bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers closed_eyes clothed clothing digital_media doggy_position door duo ectotongue english_text fluids fontcest from_behind_position hooded_jacket hoodie incest indoors intraspecies jacket male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy motion_lines mounting on_bed orange_blush orange_tongue papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penetration_from_behind sans_(undertale) sex sex_from_behind sibling_incest siblings skeleton spookster teeth text thrusting tongue tongue_out top_papyrus undead undertale undertale_(series) visible_breath yaoi
1boy 2010s 2015 animated_skeleton artist_name blue_blush blue_penis blue_tongue blush bodily_fluids bondage bottom_sans chair clothed clothing cum cussing ectopenis ectotongue english_text fluids formal formal_clothes formal_wear hand hand_on_crotch male male_focus malesub monster neck_tie necktie office_chair partially_colored penis penis_out penis_through_fly profanity sans sans_(undertale) sitting sitting_on_chair skeleton solo_focus submissive submissive_male swearing sweat text tied_up tomorobo tongue tongue_out uke_sans unbuttoned unbuttoned_shirt undead undertale undertale_(series) undertale_fanfiction vest white_background
1boy 2010s 2015 animated_skeleton artist_name blue_blush blue_penis blue_tongue blush bodily_fluids bondage bottom_sans chair clothed clothing cum cussing ectopenis ectotongue english_text fluids formal formal_clothes formal_wear hand hand_on_crotch male male_focus malesub monster neck_tie necktie office_chair partially_colored penis penis_out penis_through_fly profanity sans sans_(undertale) sitting sitting_on_chair skeleton solo_focus submissive submissive_male swearing sweat text tied_up tomorobo tongue tongue_out uke_sans unbuttoned unbuttoned_shirt undead undertale undertale_(series) undertale_fanfiction vest white_background
2023 2boys 2d animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother/brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media dominant dominant_male duo ectopenis ectoplasm ectotongue edit edited english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils humanoid incest intraspecies large_filesize long_image male male/male male_only maledom malesub monster monster_boy multiple_images nude nude_male orange_blush orange_penis overstimulation papyrus_(undertale) papysans partially_colored penetration penis sans_(undertale) sequential sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears teeth text third-party_edit thrusting tongue top_papyrus trembling trembling_legs undead undertale undertale_(series) video_game_character video_games yaoi
2023 2boys 2d animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother/brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media dominant dominant_male duo ectopenis ectoplasm ectotongue edit edited english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils humanoid incest intraspecies large_filesize long_image male male/male male_only maledom malesub monster monster_boy multiple_images nude nude_male orange_blush orange_penis overstimulation papyrus_(undertale) papysans partially_colored penetration penis sans_(undertale) sequential sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears teeth text third-party_edit thrusting tongue top_papyrus trembling trembling_legs undead undertale undertale_(series) video_game_character video_games yaoi
2023 2boys 2d animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother/brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media dominant dominant_male duo ectopenis ectoplasm ectotongue edit english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils humanoid incest intraspecies large_filesize long_image male male/male male_only maledom malesub monster monster_boy multiple_images nude nude_male orange_blush orange_penis overstimulation papyrus_(undertale) papysans partially_colored penetration penis sans_(undertale) sequential sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tall_image tears teeth text third-party_edit thrusting tongue top_papyrus trembling trembling_legs undead undertale undertale_(series) video_game_character video_games yaoi
2023 2boys 2d animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother/brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media dominant dominant_male duo ectopenis ectoplasm ectotongue edit english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils humanoid incest intraspecies large_filesize long_image male male/male male_only maledom malesub monster monster_boy multiple_images nude nude_male orange_blush orange_penis overstimulation papyrus_(undertale) papysans partially_colored penetration penis sans_(undertale) sequential sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tall_image tears teeth text third-party_edit thrusting tongue top_papyrus trembling trembling_legs undead undertale undertale_(series) video_game_character video_games yaoi
2021 2boys 2d anal animated_skeleton aroused artist_name beetleevil begging biting_clothes biting_shirt blue_blush blue_tongue blush blushing_male bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers carrying carrying_another carrying_partner carrying_position clothed clothing crotch_rub digital_media dirty_talk dry_humping duo ectopenis ectoplasm ectotongue edit english_text evilbeetle fontcest glowing_genitalia grabbing_wrist grey_background hand_on_crotch heart-shaped_pupils heart_eyes humanoid humping incest intraspecies large_filesize long_image male male/male male_only male_penetrated male_penetrating moaning monochrome monster monster_boy multiple_images orange_blush orange_shirt pants_around_legs pants_around_thighs pants_down papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration pervert pervert_male profanity reverse_stand_and_carry_position reverse_suspended_congress sans_(undertale) sequential sex shirt_up sibling_incest siblings simple_background skeleton soul soul_sex speech_bubble spoken_musical_note stand_and_carry_position stealth_sex swearing talking talking_to_another talking_to_partner tall_image tears tears_of_pleasure teeth text text_bubble third-party_edit top_papyrus touching_crotch trembling undead undertale undertale_(series) video_game_character video_games yaoi
2021 2boys 2d anal animated_skeleton aroused artist_name beetleevil begging biting_clothes biting_shirt blue_blush blue_tongue blush blushing_male bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers carrying carrying_another carrying_partner carrying_position clothed clothing crotch_rub digital_media dirty_talk dry_humping duo ectopenis ectoplasm ectotongue edit english_text evilbeetle fontcest glowing_genitalia grabbing_wrist grey_background hand_on_crotch heart-shaped_pupils heart_eyes humanoid humping incest intraspecies large_filesize long_image male male/male male_only male_penetrated male_penetrating moaning monochrome monster monster_boy multiple_images orange_blush orange_shirt pants_around_legs pants_around_thighs pants_down papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration pervert pervert_male profanity reverse_stand_and_carry_position reverse_suspended_congress sans_(undertale) sequential sex shirt_up sibling_incest siblings simple_background skeleton soul soul_sex speech_bubble spoken_musical_note stand_and_carry_position stealth_sex swearing talking talking_to_another talking_to_partner tall_image tears tears_of_pleasure teeth text text_bubble third-party_edit top_papyrus touching_crotch trembling undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2d 2d_(artwork) animated_skeleton anon anonymous blue_blush blue_tongue blush bottom_sans bouncing_penis brother brother/brother brother_and_brother brother_penetrating_brother brothers comic cum cum_in_mouth digital_media_(artwork) duo ectopenis edit edited eli-sin-g english_text fellatio finger_snap fingers_interlocked fontcest hypnotized incest interlocked_fingers intertwined_fingers irrumatio kolesjoie long_image male mind_control monster mouthfuck multiple_images orange_blush orange_penis papyrus papyrus_(undertale) papysans penetration penis red_penis sans sans_(undertale) seme_papyrus sequence sequential sex skeleton swallowing_cum sweat talking tall_image text third-party_edit tongue tongue_out top_papyrus tumblr uke_sans undead undertale undertale_(series) veiny_penis video_games yaoi
2010s 2d 2d_(artwork) animated_skeleton anon anonymous blue_blush blue_tongue blush bottom_sans bouncing_penis brother brother/brother brother_and_brother brother_penetrating_brother brothers comic cum cum_in_mouth digital_media_(artwork) duo ectopenis edit edited eli-sin-g english_text fellatio finger_snap fingers_interlocked fontcest hypnotized incest interlocked_fingers intertwined_fingers irrumatio kolesjoie long_image male mind_control monster mouthfuck multiple_images orange_blush orange_penis papyrus papyrus_(undertale) papysans penetration penis red_penis sans sans_(undertale) seme_papyrus sequence sequential sex skeleton swallowing_cum sweat talking tall_image text third-party_edit tongue tongue_out top_papyrus tumblr uke_sans undead undertale undertale_(series) veiny_penis video_games yaoi
! !? ... 13thcatofthegate 2018 2boys 2d absurd_res after_sex all_fours anal animated_skeleton arms_around_another arms_around_another's_neck arms_around_neck bedroom bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_eye blue_penis blue_tongue blush bottom_sans brother/brother brother_penetrating_brother brothers clothed clothed_male comic comic_page comic_panel comic_sans completely_nude completely_nude_male crying cum cum_on_sheets digital_media doggy_position drooling duo ectopenis ectotongue edit ejaculation english_text extremely_large_filesize fontcest from_behind_position genitals glowing_eye hand_on_another's_chest hand_on_chest handjob handjob_while_penetrating hands_around_neck hugged_from_behind hugging humanoid incest incredibly_absurdres indoors intraspecies kissing kissing_cheek large_filesize larger_male larger_penetrating larger_penetrating_smaller laying_down licking_neck licking_tongue long_image looking_at_another looking_at_partner lying making_out male male/male male_only male_penetrated male_penetrating male_penetrating_male monster multiple_images nude nude_male orange_blush orange_eye orange_penis orange_tongue orgasm papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration penetration_from_behind penis saliva_string saliva_trail sans_(undertale) sequential sex sex_from_behind shirt_removed shorter_male sibling_incest siblings skeleton sleeping sleeping_nude sleeping_together smaller_male smaller_penetrated soul soul_sex speech_bubble spoken_ellipsis spoken_exclamation_mark taking_off_clothes talking talking_to_another tall_image taller_male tears text third-party_edit tongue tongue_out top_papyrus topless topless_male undead undertale undertale_(series) undressed undressing undressing_another undressing_partner video_game_character video_games wake_up yaoi zzz
! !? ... 13thcatofthegate 2018 2boys 2d absurd_res after_sex all_fours anal animated_skeleton arms_around_another arms_around_another's_neck arms_around_neck bedroom bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_eye blue_penis blue_tongue blush bottom_sans brother/brother brother_penetrating_brother brothers clothed clothed_male comic comic_page comic_panel comic_sans completely_nude completely_nude_male crying cum cum_on_sheets digital_media doggy_position drooling duo ectopenis ectotongue edit ejaculation english_text extremely_large_filesize fontcest from_behind_position genitals glowing_eye hand_on_another's_chest hand_on_chest handjob handjob_while_penetrating hands_around_neck hugged_from_behind hugging humanoid incest incredibly_absurdres indoors intraspecies kissing kissing_cheek large_filesize larger_male larger_penetrating larger_penetrating_smaller laying_down licking_neck licking_tongue long_image looking_at_another looking_at_partner lying making_out male male/male male_only male_penetrated male_penetrating male_penetrating_male monster multiple_images nude nude_male orange_blush orange_eye orange_penis orange_tongue orgasm papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration penetration_from_behind penis saliva_string saliva_trail sans_(undertale) sequential sex sex_from_behind shirt_removed shorter_male sibling_incest siblings skeleton sleeping sleeping_nude sleeping_together smaller_male smaller_penetrated soul soul_sex speech_bubble spoken_ellipsis spoken_exclamation_mark taking_off_clothes talking talking_to_another tall_image taller_male tears text third-party_edit tongue tongue_out top_papyrus topless topless_male undead undertale undertale_(series) undressed undressing undressing_another undressing_partner video_game_character video_games wake_up yaoi zzz
2boys 2d anal anal_fingering anal_sex animated_skeleton bigger_dom bigger_penetrating bigger_penetrating_smaller black_shorts blue_blush blue_penis blue_tongue blush bottom_sans bottomless bottomless_male carrying carrying_another carrying_partner carrying_position clothed clothing cum cum_in_mouth digital_media duo ectopenis ectoplasm ectotongue elemental_creature elemental_humanoid fellatio fingering fingering_another fingering_partner fire_elemental from_behind_position glasses grillby grillsans handjob heart hooded_jacket hoodie humanoid interspecies jacket kissing larger_male larger_penetrating larger_penetrating_smaller making_out male male/male male_humanoid male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy multiple_positions multiple_views oral orange_body orange_penis penetration penetration_from_behind penis pink_background reverse_stand_and_carry_position reverse_suspended_congress sans_(undertale) sansby sex shandrawaka shorts simple_background size_difference skeleton smaller_male smaller_penetrated stand_and_carry_position tears undead undertale undertale_(series) yaoi
2boys 2d anal anal_fingering anal_sex animated_skeleton bigger_dom bigger_penetrating bigger_penetrating_smaller black_shorts blue_blush blue_penis blue_tongue blush bottom_sans bottomless bottomless_male carrying carrying_another carrying_partner carrying_position clothed clothing cum cum_in_mouth digital_media duo ectopenis ectoplasm ectotongue elemental_creature elemental_humanoid fellatio fingering fingering_another fingering_partner fire_elemental from_behind_position glasses grillby grillsans handjob heart hooded_jacket hoodie humanoid interspecies jacket kissing larger_male larger_penetrating larger_penetrating_smaller making_out male male/male male_humanoid male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy multiple_positions multiple_views oral orange_body orange_penis penetration penetration_from_behind penis pink_background reverse_stand_and_carry_position reverse_suspended_congress sans_(undertale) sansby sex shandrawaka shorts simple_background size_difference skeleton smaller_male smaller_penetrated stand_and_carry_position tears undead undertale undertale_(series) yaoi
2023 2boys 2d anal animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother/brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg humanoid incest intraspecies male male/male male_only maledom malesub monster monster_boy nude nude_male orange_blush orange_penis overstimulation papyrus_(undertale) papysans penetration penis sans_(undertale) sequential sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears teeth text thrusting tongue top_papyrus trembling trembling_legs undead undertale undertale_(series) video_game_character video_games yaoi
2023 2boys 2d anal animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother/brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg humanoid incest intraspecies male male/male male_only maledom malesub monster monster_boy nude nude_male orange_blush orange_penis overstimulation papyrus_(undertale) papysans penetration penis sans_(undertale) sequential sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears teeth text thrusting tongue top_papyrus trembling trembling_legs undead undertale undertale_(series) video_game_character video_games yaoi
2023 2boys 2d anal animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother/brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying digital_media digital_media_(artwork) dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils humanoid incest intraspecies male male/male male_only maledom malesub monster monster_boy nude nude_male orange_blush orange_penis overstimulation papyrus_(undertale) papysans penetration penis sans_(undertale) sequential sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears teeth text thrusting tongue top_papyrus undead undertale undertale_(series) video_game_character video_games yaoi
2023 2boys 2d anal animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother/brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying digital_media digital_media_(artwork) dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils humanoid incest intraspecies male male/male male_only maledom malesub monster monster_boy nude nude_male orange_blush orange_penis overstimulation papyrus_(undertale) papysans penetration penis sans_(undertale) sequential sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears teeth text thrusting tongue top_papyrus undead undertale undertale_(series) video_game_character video_games yaoi
2021 2boys 2d animated_skeleton artist_name beetleevil begging blue_blush blue_tongue blush blushing_male bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers carrying carrying_another carrying_partner carrying_position clothed clothing cussing digital_media dirty_talk duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest grey_background heart-shaped_pupils heart_eyes humanoid incest intraspecies male male/male male_only male_penetrated male_penetrating moaning monochrome monster monster_boy orange_blush orange_shirt papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration profanity reverse_stand_and_carry_position reverse_suspended_congress sans_(undertale) sequential sex shirt_up sibling_incest siblings simple_background skeleton soul soul_sex speech_bubble stand_and_carry_position stealth_sex swearing talking talking_to_another talking_to_partner text text_bubble top_papyrus undead undertale undertale_(series) unseen_male_face video_games yaoi
2021 2boys 2d animated_skeleton artist_name beetleevil begging blue_blush blue_tongue blush blushing_male bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers carrying carrying_another carrying_partner carrying_position clothed clothing cussing digital_media dirty_talk duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest grey_background heart-shaped_pupils heart_eyes humanoid incest intraspecies male male/male male_only male_penetrated male_penetrating moaning monochrome monster monster_boy orange_blush orange_shirt papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration profanity reverse_stand_and_carry_position reverse_suspended_congress sans_(undertale) sequential sex shirt_up sibling_incest siblings simple_background skeleton soul soul_sex speech_bubble stand_and_carry_position stealth_sex swearing talking talking_to_another talking_to_partner text text_bubble top_papyrus undead undertale undertale_(series) unseen_male_face video_games yaoi
2016 2boys 2d animated_skeleton blue_tongue bottom_sans brother brother/brother brothers clothed comic comic_panel comic_sans digital_media duo ectopenis ectotongue edit english_text fellatio fellatio_pov fontcest genitals hand_on_another's_head humanoid incest intraspecies long_image male male/male male_only male_pov monochrome monster monster_boy multiple_images orange_penis papyrus_(font) papyrus_(undertale) papysans partially_colored penis penis_out pov sans_(undertale) sequential sibling_incest siblings skeleton sucking_penis talking tall_image teeth text third-party_edit tombone-jack tomis-jb tongue top_papyrus undead undertale undertale_(series) video_game_character video_games yaoi
2016 2boys 2d animated_skeleton blue_tongue bottom_sans brother brother/brother brothers clothed comic comic_panel comic_sans digital_media duo ectopenis ectotongue edit english_text fellatio fellatio_pov fontcest genitals hand_on_another's_head humanoid incest intraspecies long_image male male/male male_only male_pov monochrome monster monster_boy multiple_images orange_penis papyrus_(font) papyrus_(undertale) papysans partially_colored penis penis_out pov sans_(undertale) sequential sibling_incest siblings skeleton sucking_penis talking tall_image teeth text third-party_edit tombone-jack tomis-jb tongue top_papyrus undead undertale undertale_(series) video_game_character video_games yaoi
1boy 1cuntboy 2010s 2018 2d 2d_(artwork) animated_skeleton blue_blush blue_pussy blue_tongue blush bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed comic comic_page comic_panel cuntboy cuntboy_penetrated cuntboysub digital_media_(artwork) dominant dominant_male duo ectopenis ectopussy ectotongue fontcest genitals headgear heart-shaped_pupils heart_eyes humanoid incest indoors intraspecies male male/cuntboy male_penetrating male_penetrating_cuntboy maledom monochrome monster monster_boy orange_blush orange_penis papyrus papyrus_(undertale) papysans partially_colored penetration penetration_from_behind penetration_through_clothes penis penis_in_pussy penis_through_clothing pussy pussy_through_clothing sans sans_(undertale) seme_papyrus sequence sequential sex sex_from_behind sex_through_clothes sex_through_clothing sibling_incest siblings skeleton speech_bubble submissive submissive_cuntboy titleze tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) vaginal vaginal_penetration vaginal_sex video_game_character video_games yaoi
1boy 1cuntboy 2010s 2018 2d 2d_(artwork) animated_skeleton blue_blush blue_pussy blue_tongue blush bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed comic comic_page comic_panel cuntboy cuntboy_penetrated cuntboysub digital_media_(artwork) dominant dominant_male duo ectopenis ectopussy ectotongue fontcest genitals headgear heart-shaped_pupils heart_eyes humanoid incest indoors intraspecies male male/cuntboy male_penetrating male_penetrating_cuntboy maledom monochrome monster monster_boy orange_blush orange_penis papyrus papyrus_(undertale) papysans partially_colored penetration penetration_from_behind penetration_through_clothes penis penis_in_pussy penis_through_clothing pussy pussy_through_clothing sans sans_(undertale) seme_papyrus sequence sequential sex sex_from_behind sex_through_clothes sex_through_clothing sibling_incest siblings skeleton speech_bubble submissive submissive_cuntboy titleze tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) vaginal vaginal_penetration vaginal_sex video_game_character video_games yaoi
animated_skeleton artist_name ass blue_blush blue_tongue blush bottom_sans butt clothed clothing crotch_focus glowing glowing_genitalia grabbing_own_ass heart-shaped_pupils heart_eyes hooded_jacket hoodie jacket legs_apart legs_spread looking_at_viewer male_only monochrome monster pants partially_colored sans sans_(undertale) simple_background skeleton solo submissive titleze tongue uke_sans undead undertale undertale_(series)
animated_skeleton artist_name ass blue_blush blue_tongue blush bottom_sans butt clothed clothing crotch_focus glowing glowing_genitalia grabbing_own_ass heart-shaped_pupils heart_eyes hooded_jacket hoodie jacket legs_apart legs_spread looking_at_viewer male_only monochrome monster pants partially_colored sans sans_(undertale) simple_background skeleton solo submissive titleze tongue uke_sans undead undertale undertale_(series)
animated_skeleton artist_name blue_blush blue_tongue blush clothed clothing ectotongue heart-shaped_pupils heart_eyes hooded_jacket hoodie jacket looking_at_viewer male_only monochrome monster pants partially_colored sans sans_(undertale) simple_background skeleton solo straddling titleze tongue tongue_out undead undertale undertale_(series)
animated_skeleton artist_name blue_blush blue_tongue blush clothed clothing ectotongue heart-shaped_pupils heart_eyes hooded_jacket hoodie jacket looking_at_viewer male_only monochrome monster pants partially_colored sans sans_(undertale) simple_background skeleton solo straddling titleze tongue tongue_out undead undertale undertale_(series)
1boy 2d 2d_(artwork) adorable animated_skeleton arm_support black_pants blue_blush blue_jacket blue_penis blue_tongue blush blushing_male bodily_fluids bottom_sans cute cute_male cute_penis digital_media_(artwork) ectotongue fangs fluids glowing_genitalia glowing_penis grey_background jacket kneel looking_at_viewer male male_only malesub monster off_shoulders pants penis sans sans_(undertale) simple_background skeleton small_penis solid_color_background solo_male submissive submissive_male tongue tongue_out topless topless_male uke_sans undead undertale undertale_(series) unknown_artist video_game_character video_games
1boy 2d 2d_(artwork) adorable animated_skeleton arm_support black_pants blue_blush blue_jacket blue_penis blue_tongue blush blushing_male bodily_fluids bottom_sans cute cute_male cute_penis digital_media_(artwork) ectotongue fangs fluids glowing_genitalia glowing_penis grey_background jacket kneel looking_at_viewer male male_only malesub monster off_shoulders pants penis sans sans_(undertale) simple_background skeleton small_penis solid_color_background solo_male submissive submissive_male tongue tongue_out topless topless_male uke_sans undead undertale undertale_(series) unknown_artist video_game_character video_games
1:1 1:1_aspect_ratio 1boy 2010s 2d animated_skeleton arm_support artist_name blue_hoodie blue_jacket blue_tongue bottomless bottomless_male digital_media_(artwork) ectotongue hooded_jacket hoodie humanoid jacket male male_masturbation male_only masturbating_with_clothes masturbation monster off_shoulder off_shoulders one_eye_closed partially_clothed ryokutya1107 sans sans_(undertale) simple_background sitting skeleton sock sock_on_penis socks solo_male tongue tongue_out topwear topwear_only undead undertale undertale_(series) white_background
1:1 1:1_aspect_ratio 1boy 2010s 2d animated_skeleton arm_support artist_name blue_hoodie blue_jacket blue_tongue bottomless bottomless_male digital_media_(artwork) ectotongue hooded_jacket hoodie humanoid jacket male male_masturbation male_only masturbating_with_clothes masturbation monster off_shoulder off_shoulders one_eye_closed partially_clothed ryokutya1107 sans sans_(undertale) simple_background sitting skeleton sock sock_on_penis socks solo_male tongue tongue_out topwear topwear_only undead undertale undertale_(series) white_background
1boy animated_skeleton black_background blue_blush blue_jacket blue_tongue blush bottom_sans clothed ectotongue face fluids jacket male male_only monster sans sans_(undertale) simple_background skeleton skull submissive tongue tongue_out uke_sans undead undertale undertale_(series) unknown_artist
1boy animated_skeleton black_background blue_blush blue_jacket blue_tongue blush bottom_sans clothed ectotongue face fluids jacket male male_only monster sans sans_(undertale) simple_background skeleton skull submissive tongue tongue_out uke_sans undead undertale undertale_(series) unknown_artist
13thcatofthegate 2018 2boys 2d all_fours anal animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_eye blue_penis blue_tongue blush bottom_sans brother/brother brother_penetrating_brother brothers comic comic_page comic_panel comic_sans completely_nude completely_nude_male cum cum_on_sheets cum_while_penetrated digital_media doggy_position drooling duo ectopenis ectotongue ejaculation english_text fontcest from_behind_position genital_fluids genitals glowing_eye handjob handjob_while_penetrating humanoid incest indoors intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster nude nude_male orange_blush orange_eye orange_penis orgasm papyrus_(undertale) papysans partially_colored penetration penetration_from_behind penis sans_(undertale) sequential sex sex_from_behind shorter_male sibling_incest siblings skeleton smaller_male smaller_penetrated speech_bubble taller_male text tongue tongue_out top_papyrus undead undertale undertale_(series) video_game_character video_games yaoi
13thcatofthegate 2018 2boys 2d all_fours anal animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_eye blue_penis blue_tongue blush bottom_sans brother/brother brother_penetrating_brother brothers comic comic_page comic_panel comic_sans completely_nude completely_nude_male cum cum_on_sheets cum_while_penetrated digital_media doggy_position drooling duo ectopenis ectotongue ejaculation english_text fontcest from_behind_position genital_fluids genitals glowing_eye handjob handjob_while_penetrating humanoid incest indoors intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster nude nude_male orange_blush orange_eye orange_penis orgasm papyrus_(undertale) papysans partially_colored penetration penetration_from_behind penis sans_(undertale) sequential sex sex_from_behind shorter_male sibling_incest siblings skeleton smaller_male smaller_penetrated speech_bubble taller_male text tongue tongue_out top_papyrus undead undertale undertale_(series) video_game_character video_games yaoi
13thcatofthegate 2018 2boys 2d animated_skeleton arms_around_another arms_around_another's_neck arms_around_neck bigger_male blue_blush blue_penis blue_tongue blush bottom_sans brother/brother brothers comic comic_page comic_panel comic_sans digital_media duo ectopenis ectotongue english_text fontcest gay handjob hands_around_neck humanoid incest indoors intraspecies larger_male male male/male male_only monster orange_blush papyrus_(undertale) papysans partially_colored penis sans_(undertale) sequential shorter_male sibling_incest siblings skeleton smaller_male soul soul_sex speech_bubble taller_male text tongue top_papyrus undead undertale undertale_(series) yaoi
13thcatofthegate 2018 2boys 2d animated_skeleton arms_around_another arms_around_another's_neck arms_around_neck bigger_male blue_blush blue_penis blue_tongue blush bottom_sans brother/brother brothers comic comic_page comic_panel comic_sans digital_media duo ectopenis ectotongue english_text fontcest gay handjob hands_around_neck humanoid incest indoors intraspecies larger_male male male/male male_only monster orange_blush papyrus_(undertale) papysans partially_colored penis sans_(undertale) sequential shorter_male sibling_incest siblings skeleton smaller_male soul soul_sex speech_bubble taller_male text tongue top_papyrus undead undertale undertale_(series) yaoi
... 13thcatofthegate 2018 2boys 2d animated_skeleton bigger_male blue_blush blue_tongue blush brother/brother brothers comic comic_page comic_panel comic_sans digital_media duo ectotongue english_text fontcest gay hand_on_another's_chest hand_on_chest humanoid incest indoors intraspecies kissing kissing_cheek larger_male licking_tongue making_out male male/male male_only monster orange_blush orange_tongue papyrus_(undertale) papysans partially_colored sans_(undertale) sequential shirt_removed shorter_male sibling_incest siblings skeleton smaller_male speech_bubble spoken_ellipsis taking_off_clothes taller_male text tongue topless topless_male undead undertale undertale_(series) undressing undressing_another undressing_partner video_game_character video_games yaoi
... 13thcatofthegate 2018 2boys 2d animated_skeleton bigger_male blue_blush blue_tongue blush brother/brother brothers comic comic_page comic_panel comic_sans digital_media duo ectotongue english_text fontcest gay hand_on_another's_chest hand_on_chest humanoid incest indoors intraspecies kissing kissing_cheek larger_male licking_tongue making_out male male/male male_only monster orange_blush orange_tongue papyrus_(undertale) papysans partially_colored sans_(undertale) sequential shirt_removed shorter_male sibling_incest siblings skeleton smaller_male speech_bubble spoken_ellipsis taking_off_clothes taller_male text tongue topless topless_male undead undertale undertale_(series) undressing undressing_another undressing_partner video_game_character video_games yaoi
! 13thcatofthegate 2018 2boys 2d animated_skeleton bed bigger_male blue_blush blue_tongue blush brother/brother brothers comic comic_page comic_panel comic_sans crying cuddling digital_media duo ectotongue english_text fontcest gay hugging humanoid incest indoors intraspecies kissing larger_male making_out male male/male male_only monster on_bed on_side orange_blush orange_tongue papyrus_(undertale) papysans partially_colored saliva_string saliva_trail sans_(undertale) sequential shorter_male sibling_incest siblings skeleton smaller_male speech_bubble spoken_exclamation_mark taller_male tears text tongue undead undertale undertale_(series) wake_up yaoi
! 13thcatofthegate 2018 2boys 2d animated_skeleton bed bigger_male blue_blush blue_tongue blush brother/brother brothers comic comic_page comic_panel comic_sans crying cuddling digital_media duo ectotongue english_text fontcest gay hugging humanoid incest indoors intraspecies kissing larger_male making_out male male/male male_only monster on_bed on_side orange_blush orange_tongue papyrus_(undertale) papysans partially_colored saliva_string saliva_trail sans_(undertale) sequential shorter_male sibling_incest siblings skeleton smaller_male speech_bubble spoken_exclamation_mark taller_male tears text tongue undead undertale undertale_(series) wake_up yaoi