Rule 34 Dev - 1:1 1:1_aspect_ratio 1boy 2d 2d_(artwork) animated_skeleton back_view blush bottom_sans bound bound_wrists digital_media_(artwork) looking_at_viewer looking_back looking_back_at_viewer male male_only malesub monster no_visible_genitalia nude nude_male nudity sacrum_lacing sans sans_(undertale) skeleton solo_male soul string submissive submissive_male sweat tied_wrists uke_sans undead undertale undertale_(series) unknown_artist video_game_character video_games white_background|1028377

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