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1cuntboy 2020s 2022 2d animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blue_tongue blush bottom_sans bound_ankles bound_arms bound_legs bound_wrists clothed cum_on_face cum_on_self cuntboy disembodied_hand ectoplasm ectopussy egg_vibrator hand hooded_jacket hoodie jacket logo_(pixiv_id_30462562) looking_down monster monster_boy object_insertion partially_clothed partially_nude restrained restraints sans sans_(undertale) sex_toy sex_toy_insertion shackles skeleton solo_focus submissive sweat tongue tongue_out uke_sans undead undertale undertale_(series) vibrating_dildo vibrator vibrator_in_pussy
1cuntboy 2020s 2022 2d animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blue_tongue blush bottom_sans bound_ankles bound_arms bound_legs bound_wrists clothed cum_on_face cum_on_self cuntboy disembodied_hand ectoplasm ectopussy egg_vibrator hand hooded_jacket hoodie jacket logo_(pixiv_id_30462562) looking_down monster monster_boy object_insertion partially_clothed partially_nude restrained restraints sans sans_(undertale) sex_toy sex_toy_insertion shackles skeleton solo_focus submissive sweat tongue tongue_out uke_sans undead undertale undertale_(series) vibrating_dildo vibrator vibrator_in_pussy
1cuntboy 2020s 2022 2d animated_skeleton blue_blush blue_cum blue_hoodie blue_jacket blue_pussy blue_tongue blush bottom_sans bound_ankles bound_arms bound_legs bound_wrists clothed crying cum cuntboy disembodied_hand drooling ectoplasm ectopussy egg_vibrator hand hooded_jacket hoodie jacket logo_(pixiv_id_30462562) monster monster_boy object_insertion one_eye_closed orgasm partially_clothed partially_nude restrained restraints sans sans_(undertale) sex_toy sex_toy_insertion shackles skeleton solo_focus submissive sweat tears uke_sans undead undertale undertale_(series) vibrating_dildo vibrator vibrator_in_pussy
1cuntboy 2020s 2022 2d animated_skeleton blue_blush blue_cum blue_hoodie blue_jacket blue_pussy blue_tongue blush bottom_sans bound_ankles bound_arms bound_legs bound_wrists clothed crying cum cuntboy disembodied_hand drooling ectoplasm ectopussy egg_vibrator hand hooded_jacket hoodie jacket logo_(pixiv_id_30462562) monster monster_boy object_insertion one_eye_closed orgasm partially_clothed partially_nude restrained restraints sans sans_(undertale) sex_toy sex_toy_insertion shackles skeleton solo_focus submissive sweat tears uke_sans undead undertale undertale_(series) vibrating_dildo vibrator vibrator_in_pussy
1cuntboy 2020s 2022 2d animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blush bottom_sans bound_ankles bound_arms bound_legs bound_wrists clothed cuntboy drooling ectoplasm ectopussy egg_vibrator hooded_jacket hoodie jacket logo_(pixiv_id_30462562) monster monster_boy object_insertion partially_clothed partially_nude restrained restraints sans sans_(undertale) sex_toy sex_toy_insertion shackles skeleton solo_focus submissive sweat uke_sans undead undertale undertale_(series) vibrating_dildo vibrator vibrator_in_pussy
1cuntboy 2020s 2022 2d animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blush bottom_sans bound_ankles bound_arms bound_legs bound_wrists clothed cuntboy drooling ectoplasm ectopussy egg_vibrator hooded_jacket hoodie jacket logo_(pixiv_id_30462562) monster monster_boy object_insertion partially_clothed partially_nude restrained restraints sans sans_(undertale) sex_toy sex_toy_insertion shackles skeleton solo_focus submissive sweat uke_sans undead undertale undertale_(series) vibrating_dildo vibrator vibrator_in_pussy
1cuntboy 2020s 2022 2d animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blush bottom_sans bound_ankles bound_arms bound_legs bound_wrists clothed cuntboy ectoplasm ectopussy egg_vibrator hooded_jacket hoodie jacket logo_(pixiv_id_30462562) monster monster_boy object_insertion partially_clothed partially_nude restrained restraints sans sans_(undertale) sex_toy sex_toy_insertion shackles skeleton solo_focus submissive sweat uke_sans undead undertale undertale_(series) vibrating_dildo vibrator vibrator_in_pussy
1cuntboy 2020s 2022 2d animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blush bottom_sans bound_ankles bound_arms bound_legs bound_wrists clothed cuntboy ectoplasm ectopussy egg_vibrator hooded_jacket hoodie jacket logo_(pixiv_id_30462562) monster monster_boy object_insertion partially_clothed partially_nude restrained restraints sans sans_(undertale) sex_toy sex_toy_insertion shackles skeleton solo_focus submissive sweat uke_sans undead undertale undertale_(series) vibrating_dildo vibrator vibrator_in_pussy
1cuntboy 2020s 2022 2d animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blush bottom_sans bound_ankles bound_arms bound_legs bound_wrists clothed cuntboy disembodied_hand ectoplasm ectopussy egg_vibrator hand hooded_jacket hoodie jacket logo_(pixiv_id_30462562) looking_at_viewer monster monster_boy partially_clothed partially_nude pillow restrained restraints sans sans_(undertale) sex_toy shackles skeleton solo_focus spread_pussy submissive sweat talking_to_viewer uke_sans undead undertale undertale_(series) vibrator
1cuntboy 2020s 2022 2d animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blush bottom_sans bound_ankles bound_arms bound_legs bound_wrists clothed cuntboy disembodied_hand ectoplasm ectopussy egg_vibrator hand hooded_jacket hoodie jacket logo_(pixiv_id_30462562) looking_at_viewer monster monster_boy partially_clothed partially_nude pillow restrained restraints sans sans_(undertale) sex_toy shackles skeleton solo_focus spread_pussy submissive sweat talking_to_viewer uke_sans undead undertale undertale_(series) vibrator
2020s 2022 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans brother brother_penetrating_brother brothers clothed crying crying_with_eyes_open cum digital_media_(artwork) drooling duo ectoplasm fontcest gloves grabbing_legs grabbing_sheets gripping_sheets hooded_jacket hoodie incest intraspecies jacket japanese_text larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_held_open logo_(pixiv_id_30462562) male male_out_of_frame male_penetrating monster monster_boy orgasm papyrus papyrus_(undertale) papysans partially_clothed partially_nude penetration pixiv pussy red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears text tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2020s 2022 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans brother brother_penetrating_brother brothers clothed crying crying_with_eyes_open cum digital_media_(artwork) drooling duo ectoplasm fontcest gloves grabbing_legs grabbing_sheets gripping_sheets hooded_jacket hoodie incest intraspecies jacket japanese_text larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_held_open logo_(pixiv_id_30462562) male male_out_of_frame male_penetrating monster monster_boy orgasm papyrus papyrus_(undertale) papysans partially_clothed partially_nude penetration pixiv pussy red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears text tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2020s 2022 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans brother brother_penetrating_brother brothers clothed crying crying_with_eyes_open cum digital_media_(artwork) drooling duo ectoplasm eyes_wide_open fontcest gloves grabbing_legs grabbing_sheets gripping_sheets hooded_jacket hoodie incest intraspecies jacket japanese_text larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_held_open logo_(pixiv_id_30462562) male male_out_of_frame male_penetrating monster monster_boy orgasm papyrus papyrus_(undertale) papysans partially_clothed partially_nude penetration pixiv pussy red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears text tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2020s 2022 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans brother brother_penetrating_brother brothers clothed crying crying_with_eyes_open cum digital_media_(artwork) drooling duo ectoplasm eyes_wide_open fontcest gloves grabbing_legs grabbing_sheets gripping_sheets hooded_jacket hoodie incest intraspecies jacket japanese_text larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_held_open logo_(pixiv_id_30462562) male male_out_of_frame male_penetrating monster monster_boy orgasm papyrus papyrus_(undertale) papysans partially_clothed partially_nude penetration pixiv pussy red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears text tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2020s 2022 2d animated_skeleton anon blue_blush blue_hoodie blue_jacket blush bottom_sans clothed ectoplasm grabbing_pillow hand hand_on_another's_head hand_on_head hooded_jacket hoodie hugging_pillow jacket japanese_text logo_(pixiv_id_30462562) monster monster_boy object_insertion partially_clothed partially_nude sans sans_(undertale) sex_toy sex_toy_insertion skeleton solo_focus submissive sweat text uke_sans undead undertale undertale_(series) unseen_character vibrator
2020s 2022 2d animated_skeleton anon blue_blush blue_hoodie blue_jacket blush bottom_sans clothed ectoplasm grabbing_pillow hand hand_on_another's_head hand_on_head hooded_jacket hoodie hugging_pillow jacket japanese_text logo_(pixiv_id_30462562) monster monster_boy object_insertion partially_clothed partially_nude sans sans_(undertale) sex_toy sex_toy_insertion skeleton solo_focus submissive sweat text uke_sans undead undertale undertale_(series) unseen_character vibrator
2022 2d animated_skeleton blue_blush blue_hoodie blue_jacket blush bottom_sans bound bound_arms chains clothed digital_media disembodied_hands dominant_pov drooling ectoplasm fingering fingering_another fingering_partner hooded_jacket hoodie jacket japanese_text leg_grab legs_apart logo_(pixiv_id_30462562) looking_at_viewer male monster monster_boy partially_clothed partially_nude potion pov restrained restraints sans_(undertale) sanster seme_gaster skeleton solo_focus submissive sweat text top_gaster uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_games w.d._gaster yaoi
2022 2d animated_skeleton blue_blush blue_hoodie blue_jacket blush bottom_sans bound bound_arms chains clothed digital_media disembodied_hands dominant_pov drooling ectoplasm fingering fingering_another fingering_partner hooded_jacket hoodie jacket japanese_text leg_grab legs_apart logo_(pixiv_id_30462562) looking_at_viewer male monster monster_boy partially_clothed partially_nude potion pov restrained restraints sans_(undertale) sanster seme_gaster skeleton solo_focus submissive sweat text top_gaster uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_games w.d._gaster yaoi
2020s 2022 2d against_wall animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans clothed clothed_male crying digital_media_(artwork) drooling duo faceless_male hooded_jacket hoodie jacket japanese_text larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male male_only monster monster_boy partially_clothed partially_nude penetration sans sans_(undertale) sex size_difference skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears text tongue tongue_out uke_sans undead undertale undertale_(series) unseen_character unseen_male_face wall wall_(structure) yaoi
2020s 2022 2d against_wall animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans clothed clothed_male crying digital_media_(artwork) drooling duo faceless_male hooded_jacket hoodie jacket japanese_text larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male male_only monster monster_boy partially_clothed partially_nude penetration sans sans_(undertale) sex size_difference skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears text tongue tongue_out uke_sans undead undertale undertale_(series) unseen_character unseen_male_face wall wall_(structure) yaoi
2020s 2022 2d ahe_gao ahegao animated_skeleton arched_back blue_blush blue_cum blue_hoodie blue_jacket blue_tongue blush bottom_sans clothed crying cum digital_media_(artwork) drooling hooded_jacket hoodie jacket japanese_text logo_(pixiv_id_30462562) monster monster_boy object_insertion orgasm sans sans_(undertale) sex_toy sex_toy_insertion skeleton solo solo_focus submissive sweat tears text tongue tongue_out uke_sans undead undertale undertale_(series) vibrator
2020s 2022 2d ahe_gao ahegao animated_skeleton arched_back blue_blush blue_cum blue_hoodie blue_jacket blue_tongue blush bottom_sans clothed crying cum digital_media_(artwork) drooling hooded_jacket hoodie jacket japanese_text logo_(pixiv_id_30462562) monster monster_boy object_insertion orgasm sans sans_(undertale) sex_toy sex_toy_insertion skeleton solo solo_focus submissive sweat tears text tongue tongue_out uke_sans undead undertale undertale_(series) vibrator
2022 2d animated_skeleton anon anonymous_male blue_blush blush bottom_sans crying digital_media_(artwork) drooling faceless_male grabbing_legs implied_penetration implied_sex japanese_text logo_(pixiv_id_30462562) monochrome monster monster_boy sans sans_(undertale) simple_background skeleton solo_focus submissive sweat tape_gag taped_mouth tears text uke_sans undead undertale undertale_(series) unseen_male unseen_male_face yaoi
2022 2d animated_skeleton anon anonymous_male blue_blush blush bottom_sans crying digital_media_(artwork) drooling faceless_male grabbing_legs implied_penetration implied_sex japanese_text logo_(pixiv_id_30462562) monochrome monster monster_boy sans sans_(undertale) simple_background skeleton solo_focus submissive sweat tape_gag taped_mouth tears text uke_sans undead undertale undertale_(series) unseen_male unseen_male_face yaoi
2020s 2022 2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blush bottom_sans clothed crying crying_with_eyes_open digital_media_(artwork) dominant_pov ectoplasm faceless_male hooded_jacket hoodie irrumatio jacket larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male_pov monster monster_boy multiple_boys partially_clothed partially_nude penetrating_pov penetration penetrator_pov pixiv pov sans sans_(undertale) sex skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus spitroast submissive sweat tears trio uke_sans undead undertale undertale_(series) unseen_male_face yaoi
2020s 2022 2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blush bottom_sans clothed crying crying_with_eyes_open digital_media_(artwork) dominant_pov ectoplasm faceless_male hooded_jacket hoodie irrumatio jacket larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male_pov monster monster_boy multiple_boys partially_clothed partially_nude penetrating_pov penetration penetrator_pov pixiv pov sans sans_(undertale) sex skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus spitroast submissive sweat tears trio uke_sans undead undertale undertale_(series) unseen_male_face yaoi
2020s 2022 2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blush bottom_sans clothed crying crying_with_eyes_open digital_media_(artwork) dominant_pov ectoplasm faceless_male hooded_jacket hoodie irrumatio jacket japanese_text larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male_pov monster monster_boy multiple_boys partially_clothed partially_nude penetrating_pov penetration penetrator_pov pixiv pov sans sans_(undertale) sex skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus spitroast submissive sweat tears text trio uke_sans undead undertale undertale_(series) unseen_male_face yaoi
2020s 2022 2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blush bottom_sans clothed crying crying_with_eyes_open digital_media_(artwork) dominant_pov ectoplasm faceless_male hooded_jacket hoodie irrumatio jacket japanese_text larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male_pov monster monster_boy multiple_boys partially_clothed partially_nude penetrating_pov penetration penetrator_pov pixiv pov sans sans_(undertale) sex skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus spitroast submissive sweat tears text trio uke_sans undead undertale undertale_(series) unseen_male_face yaoi
1boy 1cuntboy 2020s 2022 2d 2d_(artwork) animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother_penetrating_brother brothers clothed crying cuntboy digital_media_(artwork) disembodied_hands disembodied_penis drooling ectopenis ectoplasm ectopussy fingers_interlocked fontcest gloves hands hooded_jacket hoodie incest interlocked_fingers intertwined_fingers jacket japanese_text logo_(pixiv_id_30462562) male male/cuntboy male_out_of_frame male_penetrating monster monster_boy one_eye_closed orange_penis papyrus papyrus_(undertale) papysans partially_clothed partially_nude penetration penis pixiv pussy red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton solo_focus submissive sweat tears text top_papyrus uke_sans undead undertale undertale_(series) unseen_character unseen_male unseen_male_face video_game_character video_games yaoi
1boy 1cuntboy 2020s 2022 2d 2d_(artwork) animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother_penetrating_brother brothers clothed crying cuntboy digital_media_(artwork) disembodied_hands disembodied_penis drooling ectopenis ectoplasm ectopussy fingers_interlocked fontcest gloves hands hooded_jacket hoodie incest interlocked_fingers intertwined_fingers jacket japanese_text logo_(pixiv_id_30462562) male male/cuntboy male_out_of_frame male_penetrating monster monster_boy one_eye_closed orange_penis papyrus papyrus_(undertale) papysans partially_clothed partially_nude penetration penis pixiv pussy red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton solo_focus submissive sweat tears text top_papyrus uke_sans undead undertale undertale_(series) unseen_character unseen_male unseen_male_face video_game_character video_games yaoi
1boy 1cuntboy 2020s 2022 2d 2d_(artwork) animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brothers clothed cuntboy digital_media_(artwork) disembodied_hands disembodied_penis drooling ectopenis ectoplasm ectopussy fingers_interlocked fontcest gloves hands hooded_jacket hoodie imminent_penetration imminent_sex incest interlocked_fingers intertwined_fingers jacket japanese_text logo_(pixiv_id_30462562) male male/cuntboy male_out_of_frame male_penetrating monster monster_boy orange_penis papyrus papyrus_(undertale) papysans partially_clothed partially_nude penis pixiv pussy red_gloves sans sans_(undertale) seme_papyrus sibling_incest siblings skeleton solo_focus submissive sweat text top_papyrus uke_sans undead undertale undertale_(series) unseen_character unseen_male unseen_male_face video_game_character video_games yaoi
1boy 1cuntboy 2020s 2022 2d 2d_(artwork) animated_skeleton blue_blush blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brothers clothed cuntboy digital_media_(artwork) disembodied_hands disembodied_penis drooling ectopenis ectoplasm ectopussy fingers_interlocked fontcest gloves hands hooded_jacket hoodie imminent_penetration imminent_sex incest interlocked_fingers intertwined_fingers jacket japanese_text logo_(pixiv_id_30462562) male male/cuntboy male_out_of_frame male_penetrating monster monster_boy orange_penis papyrus papyrus_(undertale) papysans partially_clothed partially_nude penis pixiv pussy red_gloves sans sans_(undertale) seme_papyrus sibling_incest siblings skeleton solo_focus submissive sweat text top_papyrus uke_sans undead undertale undertale_(series) unseen_character unseen_male unseen_male_face video_game_character video_games yaoi
1other 2022 2boys 2d animated_skeleton blue_hoodie blue_jacket bodily_fluids brothers clothed covering_own_mouth crying digital_media_(artwork) fully_clothed hooded_jacket hoodie humanoid jacket japanese_text kneel logo_(pixiv_id_30462562) male monochrome monster monster_boy papyrus_(undertale) partially_colored puking sans_(undertale) siblings simple_background skeleton solo_focus sweat tears text undead undertale undertale_(series) vomit white_background worried
1other 2022 2boys 2d animated_skeleton blue_hoodie blue_jacket bodily_fluids brothers clothed covering_own_mouth crying digital_media_(artwork) fully_clothed hooded_jacket hoodie humanoid jacket japanese_text kneel logo_(pixiv_id_30462562) male monochrome monster monster_boy papyrus_(undertale) partially_colored puking sans_(undertale) siblings simple_background skeleton solo_focus sweat tears text undead undertale undertale_(series) vomit white_background worried
1cuntboy 2020s 2022 2d 2d_(artwork) 4boys animated_skeleton anon anonymous_male bigger_male blue_blush blue_hoodie blue_jacket blush bottom_sans bottomless bukkake censored censored_penis clothed creampie crying cum cum_on_face cuntboy cuntboy_focus cuntboysub digital_media_(artwork) drooling ectoplasm ectopussy faceless_male gangbang genitals grabbing_arm group_sex hooded_jacket hoodie jacket larger_male logo_(pixiv_id_30462562) male male_only male_out_of_frame monster monster_boy mosaic_censoring multiple_boys multiple_males one_eye_closed penis pussy sans sans_(undertale) skeleton smaller_cuntboy solo_focus submissive sweat tears uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
1cuntboy 2020s 2022 2d 2d_(artwork) 4boys animated_skeleton anon anonymous_male bigger_male blue_blush blue_hoodie blue_jacket blush bottom_sans bottomless bukkake censored censored_penis clothed creampie crying cum cum_on_face cuntboy cuntboy_focus cuntboysub digital_media_(artwork) drooling ectoplasm ectopussy faceless_male gangbang genitals grabbing_arm group_sex hooded_jacket hoodie jacket larger_male logo_(pixiv_id_30462562) male male_only male_out_of_frame monster monster_boy mosaic_censoring multiple_boys multiple_males one_eye_closed penis pussy sans sans_(undertale) skeleton smaller_cuntboy solo_focus submissive sweat tears uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2d animated_skeleton anon anonymous_male blue_blush blue_hoodie blue_jacket blush bottom_sans bottomless clothed digital_media_(artwork) dominant_pov drooling ectoplasm faceless_male grabbing_legs grabbing_sheets gripping_sheets hooded_jacket hoodie jacket japanese_text legs_held_open logo_(pixiv_id_30462562) looking_at_viewer male male_pov monster monster_boy on_back penetrating_pov penetration pov sans sans_(undertale) sex skeleton solo_focus spread_legs submissive sweat text uke_sans undead undertale undertale_(series) unseen_male_face
2d animated_skeleton anon anonymous_male blue_blush blue_hoodie blue_jacket blush bottom_sans bottomless clothed digital_media_(artwork) dominant_pov drooling ectoplasm faceless_male grabbing_legs grabbing_sheets gripping_sheets hooded_jacket hoodie jacket japanese_text legs_held_open logo_(pixiv_id_30462562) looking_at_viewer male male_pov monster monster_boy on_back penetrating_pov penetration pov sans sans_(undertale) sex skeleton solo_focus spread_legs submissive sweat text uke_sans undead undertale undertale_(series) unseen_male_face
2020s 2022 2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans clothed clothed_male crying digital_media_(artwork) drooling faceless_male hooded_jacket hoodie implied_double_penetration implied_penetration implied_sex jacket larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male monster monster_boy multiple_boys one_eye_closed sans sans_(undertale) skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears tongue_out trio uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2020s 2022 2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans clothed clothed_male crying digital_media_(artwork) drooling faceless_male hooded_jacket hoodie implied_double_penetration implied_penetration implied_sex jacket larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male monster monster_boy multiple_boys one_eye_closed sans sans_(undertale) skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears tongue_out trio uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2020s 2022 2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blush bottom_sans clothed digital_media_(artwork) drooling faceless_male hooded_jacket hoodie implied_double_penetration implied_penetration implied_sex jacket larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) looking_away male monster monster_boy sans sans_(undertale) skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat trio uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2020s 2022 2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blush bottom_sans clothed digital_media_(artwork) drooling faceless_male hooded_jacket hoodie implied_double_penetration implied_penetration implied_sex jacket larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) looking_away male monster monster_boy sans sans_(undertale) skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat trio uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2022 2d 2d_(artwork) animated_skeleton blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans clothed crying crying_with_eyes_open digital_media_(artwork) drooling ectoplasm ectopussy eye_fucking hooded_jacket hoodie jacket legs_forced_open legs_held_open logo_(pixiv_id_30462562) male_only monster monster_boy penetration pussy rape red_tentacles sans sans_(undertale) sex skeleton skull_fucking solo_focus submissive sweat tears tentacle tentacle_in_eye tentacle_rape tentacle_sex tentacles_around_arms tentacles_around_legs tentacles_everywhere tongue uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi
2022 2d 2d_(artwork) animated_skeleton blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans clothed crying crying_with_eyes_open digital_media_(artwork) drooling ectoplasm ectopussy eye_fucking hooded_jacket hoodie jacket legs_forced_open legs_held_open logo_(pixiv_id_30462562) male_only monster monster_boy penetration pussy rape red_tentacles sans sans_(undertale) sex skeleton skull_fucking solo_focus submissive sweat tears tentacle tentacle_in_eye tentacle_rape tentacle_sex tentacles_around_arms tentacles_around_legs tentacles_everywhere tongue uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi
2d animated_skeleton anon anonymous_male bdsm bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blindfold blindfolded blue_blush blue_hoodie blue_jacket blush bondage bottom_sans clothed digital_media_(artwork) drooling faceless_male from_behind from_behind_position hooded_jacket hoodie jacket larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male monster monster_boy penetration penetration_from_behind sans sans_(undertale) sex sex_from_behind simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tied_up tied_wrists uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2d animated_skeleton anon anonymous_male bdsm bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blindfold blindfolded blue_blush blue_hoodie blue_jacket blush bondage bottom_sans clothed digital_media_(artwork) drooling faceless_male from_behind from_behind_position hooded_jacket hoodie jacket larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male monster monster_boy penetration penetration_from_behind sans sans_(undertale) sex sex_from_behind simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tied_up tied_wrists uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2d animated_skeleton anon anonymous_male bdsm blue_blush blue_hoodie blue_jacket blush bottom_sans bound_wrists clothed digital_media_(artwork) dominant_pov drooling ectoplasm faceless_male from_front_position hooded_jacket hoodie jacket logo_(pixiv_id_30462562) looking_at_viewer male male_pov monster monster_boy on_back penetrating_pov penetration pov sans sans_(undertale) sex skeleton solo_focus spread_legs submissive sweat tied_up tied_wrists uke_sans undead undertale undertale_(series) unseen_male_face white_background wide_eyed yaoi
2d animated_skeleton anon anonymous_male bdsm blue_blush blue_hoodie blue_jacket blush bottom_sans bound_wrists clothed digital_media_(artwork) dominant_pov drooling ectoplasm faceless_male from_front_position hooded_jacket hoodie jacket logo_(pixiv_id_30462562) looking_at_viewer male male_pov monster monster_boy on_back penetrating_pov penetration pov sans sans_(undertale) sex skeleton solo_focus spread_legs submissive sweat tied_up tied_wrists uke_sans undead undertale undertale_(series) unseen_male_face white_background wide_eyed yaoi
2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blush bottom_sans bottomless clothed crying digital_media_(artwork) faceless_male hooded_jacket hoodie implied_penetration implied_sex jacket larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male monster monster_boy sans sans_(undertale) simple_background size_difference skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus spread_legs submissive sweat tears uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blush bottom_sans bottomless clothed crying digital_media_(artwork) faceless_male hooded_jacket hoodie implied_penetration implied_sex jacket larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male monster monster_boy sans sans_(undertale) simple_background size_difference skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus spread_legs submissive sweat tears uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2022 2d 2d_(artwork) animated_skeleton anon blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans clothed cum_on_face digital_media_(artwork) drooling hand hooded_jacket hoodie jacket logo_(pixiv_id_30462562) looking_down monster monster_boy pixiv pov sans sans_(undertale) simple_background skeleton solo_focus submissive sweat tongue tongue_grab tongue_out uke_sans undead undertale undertale_(series) unseen_character upper_body video_game_character video_games white_background yaoi
2022 2d 2d_(artwork) animated_skeleton anon blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans clothed cum_on_face digital_media_(artwork) drooling hand hooded_jacket hoodie jacket logo_(pixiv_id_30462562) looking_down monster monster_boy pixiv pov sans sans_(undertale) simple_background skeleton solo_focus submissive sweat tongue tongue_grab tongue_out uke_sans undead undertale undertale_(series) unseen_character upper_body video_game_character video_games white_background yaoi
2022 2d 2d_(artwork) animated_skeleton anon anonymous_male black_censor_bar blue_blush blue_hoodie blue_jacket blush bottom_sans censor_bar censored_penis clothed crying digital_media_(artwork) dominant_pov ectoplasm faceless_male from_behind_position grabbing_sheets gripping_sheets hood_up hooded_jacket hoodie jacket japanese_text kabeshiri livestream logo_(pixiv_id_30462562) male male_pov monster monster_boy penetrating_pov penetration penetration_from_behind penis pov sans sans_(undertale) screen sex sex_from_behind skeleton solo_focus stuck stuck_in_wall submissive sweat tears text uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2022 2d 2d_(artwork) animated_skeleton anon anonymous_male black_censor_bar blue_blush blue_hoodie blue_jacket blush bottom_sans censor_bar censored_penis clothed crying digital_media_(artwork) dominant_pov ectoplasm faceless_male from_behind_position grabbing_sheets gripping_sheets hood_up hooded_jacket hoodie jacket japanese_text kabeshiri livestream logo_(pixiv_id_30462562) male male_pov monster monster_boy penetrating_pov penetration penetration_from_behind penis pov sans sans_(undertale) screen sex sex_from_behind skeleton solo_focus stuck stuck_in_wall submissive sweat tears text uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2022 2d 2d_(artwork) animated_skeleton anon anonymous_male black_censor_bar blue_hoodie blue_jacket bottom_sans censor_bar censored_penis clothed crying digital_media_(artwork) dominant_pov drooling ectoplasm faceless_male grabbing_sheets gripping_sheets hooded_jacket hoodie jacket japanese_text kabeshiri livestream logo_(pixiv_id_30462562) male male_pov monster monster_boy penetrating_pov penetration penetration_from_behind penis pov sans sans_(undertale) screen sex sex_from_behind skeleton solo_focus stuck stuck_in_wall submissive sweat tears text uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2022 2d 2d_(artwork) animated_skeleton anon anonymous_male black_censor_bar blue_hoodie blue_jacket bottom_sans censor_bar censored_penis clothed crying digital_media_(artwork) dominant_pov drooling ectoplasm faceless_male grabbing_sheets gripping_sheets hooded_jacket hoodie jacket japanese_text kabeshiri livestream logo_(pixiv_id_30462562) male male_pov monster monster_boy penetrating_pov penetration penetration_from_behind penis pov sans sans_(undertale) screen sex sex_from_behind skeleton solo_focus stuck stuck_in_wall submissive sweat tears text uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2022 2d 2d_(artwork) animated_skeleton anon anonymous_male black_censor_bar blue_hoodie blue_jacket bottom_sans censor_bar censored_penis clothed digital_media_(artwork) dominant_pov ectoplasm faceless_male hooded_jacket hoodie imminent_penetration imminent_rape imminent_sex jacket japanese_text kabeshiri livestream logo_(pixiv_id_30462562) male male_pov monitor monster monster_boy penetrating_pov penis pov sans sans_(undertale) screen skeleton solo_focus stuck stuck_in_object stuck_in_wall submissive sweat text uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2022 2d 2d_(artwork) animated_skeleton anon anonymous_male black_censor_bar blue_hoodie blue_jacket bottom_sans censor_bar censored_penis clothed digital_media_(artwork) dominant_pov ectoplasm faceless_male hooded_jacket hoodie imminent_penetration imminent_rape imminent_sex jacket japanese_text kabeshiri livestream logo_(pixiv_id_30462562) male male_pov monitor monster monster_boy penetrating_pov penis pov sans sans_(undertale) screen skeleton solo_focus stuck stuck_in_object stuck_in_wall submissive sweat text uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2022 2d animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male blue_blush blush bottom_sans clothed digital_media drooling duo fingers_interlocked grabbing_hands hand hands implied_sex interlocked_fingers intertwined_fingers larger_male logo_(pixiv_id_30462562) male monster monster_boy pinned_down sans_(undertale) sanster skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat uke_sans undead undertale undertale_(series) unseen_male_face video_games w.d._gaster yaoi
2022 2d animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male blue_blush blush bottom_sans clothed digital_media drooling duo fingers_interlocked grabbing_hands hand hands implied_sex interlocked_fingers intertwined_fingers larger_male logo_(pixiv_id_30462562) male monster monster_boy pinned_down sans_(undertale) sanster skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat uke_sans undead undertale undertale_(series) unseen_male_face video_games w.d._gaster yaoi
2020s 2022 2d animated_skeleton arm_grab blue_blush blush bottom_sans clothed crying digital_media dominant_pov drooling grabbing_arm grabbing_hand hand hand_grab hands hoodie implied_penetration implied_sex japanese_text logo_(pixiv_id_30462562) male male_pov monster monster_boy on_back one_eye_closed pov sans_(undertale) sanster skeleton solo_focus submissive sweat tears text uke_sans undead undertale undertale_(series) unseen_male_face upper_body video_games w.d._gaster yaoi
2020s 2022 2d animated_skeleton arm_grab blue_blush blush bottom_sans clothed crying digital_media dominant_pov drooling grabbing_arm grabbing_hand hand hand_grab hands hoodie implied_penetration implied_sex japanese_text logo_(pixiv_id_30462562) male male_pov monster monster_boy on_back one_eye_closed pov sans_(undertale) sanster skeleton solo_focus submissive sweat tears text uke_sans undead undertale undertale_(series) unseen_male_face upper_body video_games w.d._gaster yaoi
2022 2d animated_skeleton arm_grab blue_blush blush bottom_sans clothed crying digital_media dominant_pov drooling grabbing_arm grabbing_hand hand hand_grab hands hoodie logo_(pixiv_id_30462562) male male_pov monster monster_boy on_back pov sans_(undertale) sanster skeleton solo_focus submissive sweat tears uke_sans undead undertale undertale_(series) unseen_male_face upper_body video_games w.d._gaster yaoi
2022 2d animated_skeleton arm_grab blue_blush blush bottom_sans clothed crying digital_media dominant_pov drooling grabbing_arm grabbing_hand hand hand_grab hands hoodie logo_(pixiv_id_30462562) male male_pov monster monster_boy on_back pov sans_(undertale) sanster skeleton solo_focus submissive sweat tears uke_sans undead undertale undertale_(series) unseen_male_face upper_body video_games w.d._gaster yaoi
2022 2d animated_skeleton blue_blush blush bottom_sans clothed digital_media dominant_pov drooling grabbing_hand groping hand hand_under_clothes hands hoodie logo_(pixiv_id_30462562) looking_away male male_pov monster monster_boy on_back pov sans_(undertale) sanster skeleton solo_focus submissive sweat uke_sans undead undertale undertale_(series) unseen_male_face upper_body video_games w.d._gaster yaoi
2022 2d animated_skeleton blue_blush blush bottom_sans clothed digital_media dominant_pov drooling grabbing_hand groping hand hand_under_clothes hands hoodie logo_(pixiv_id_30462562) looking_away male male_pov monster monster_boy on_back pov sans_(undertale) sanster skeleton solo_focus submissive sweat uke_sans undead undertale undertale_(series) unseen_male_face upper_body video_games w.d._gaster yaoi
2020s 2022 2boys 2d 2d_(artwork) animated_skeleton blood blue_blush blush bottom_sans claws clothed crying digital_media_(artwork) domination drooling duo flowans flower flowey_the_flower flowsans hoodie injury interspecies japanese_text logo_(pixiv_id_30462562) male monster monster_boy one_eye_closed penetration pinned_down plant plant_tentacle plant_tentacles rape sans sans_(undertale) seme_flowey sex skeleton solo_focus submissive sweat tears tentacle tentacle_in_mouth tentacle_rape tentacle_sex tentacles_around_legs text top_flowey uke_sans undead undertale undertale_(series) video_game_character video_games vine_tentacles vines white_background yaoi
2020s 2022 2boys 2d 2d_(artwork) animated_skeleton blood blue_blush blush bottom_sans claws clothed crying digital_media_(artwork) domination drooling duo flowans flower flowey_the_flower flowsans hoodie injury interspecies japanese_text logo_(pixiv_id_30462562) male monster monster_boy one_eye_closed penetration pinned_down plant plant_tentacle plant_tentacles rape sans sans_(undertale) seme_flowey sex skeleton solo_focus submissive sweat tears tentacle tentacle_in_mouth tentacle_rape tentacle_sex tentacles_around_legs text top_flowey uke_sans undead undertale undertale_(series) video_game_character video_games vine_tentacles vines white_background yaoi
2020s 2022 2boys 2d 2d_(artwork) animated_skeleton black_background black_censor_bar blue_blush blush bottom_sans censor_bar clothed creepy_eyes creepy_face creepy_smile digital_media_(artwork) duo ectoplasm flowans flower flowey_the_flower flowsans hoodie interspecies japanese_text logo_(pixiv_id_30462562) monster monster_boy one_eye_closed penetration plant plant_penis plant_tentacle plant_tentacles potion rape sans sans_(undertale) seme_flowey sex simple_background skeleton solid_color_background submissive sweat talking_to_another talking_to_partner tentacle tentacle_in_mouth tentacle_rape tentacle_sex tentacles_around_legs text top_flowey uke_sans undead undertale undertale_(series) video_game_character video_games vine_tentacles vines yaoi
2020s 2022 2boys 2d 2d_(artwork) animated_skeleton black_background black_censor_bar blue_blush blush bottom_sans censor_bar clothed creepy_eyes creepy_face creepy_smile digital_media_(artwork) duo ectoplasm flowans flower flowey_the_flower flowsans hoodie interspecies japanese_text logo_(pixiv_id_30462562) monster monster_boy one_eye_closed penetration plant plant_penis plant_tentacle plant_tentacles potion rape sans sans_(undertale) seme_flowey sex simple_background skeleton solid_color_background submissive sweat talking_to_another talking_to_partner tentacle tentacle_in_mouth tentacle_rape tentacle_sex tentacles_around_legs text top_flowey uke_sans undead undertale undertale_(series) video_game_character video_games vine_tentacles vines yaoi
2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller biting_sheets blue_blush blush bottom_sans clothed crying digital_media_(artwork) faceless_male from_behind from_behind_position grabbing_from_behind grabbing_sheets gripping_sheets hoodie japanese_text larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male monster monster_boy on_stomach one_eye_closed penetration penetration_from_behind sans sans_(undertale) sex sex_from_behind skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears text uke_sans undead undertale undertale_(series) unseen_male_face yaoi
2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller biting_sheets blue_blush blush bottom_sans clothed crying digital_media_(artwork) faceless_male from_behind from_behind_position grabbing_from_behind grabbing_sheets gripping_sheets hoodie japanese_text larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male monster monster_boy on_stomach one_eye_closed penetration penetration_from_behind sans sans_(undertale) sex sex_from_behind skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears text uke_sans undead undertale undertale_(series) unseen_male_face yaoi