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2010s 2018 2boys 2d 2d_(artwork)anal animated_skeleton artist_name big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket blue_tongue bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers chain chains clothed crying crying_with_eyes_open digital_media_(artwork)dominant dominant_male domination duo ectopenis ectoplasm ectotongue fontcest ganzooky gay genitals gradient_background hooded_jacket hoodie incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller male male/male male_penetrated male_penetrating male_penetrating_male maledom monster monster_boy non-con non-consensual noncon nonconsensual nsfwsinningsans open_mouth orange_background orange_penis papyrus papyrus_(undertale)papysans penetration penis rape red_gloves red_scarf sans sans_(undertale)scarf seme_papyrus sex sibling_incest siblings simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom submissive sweat tears top_papyrus tumblr_username uke_sans undead undertale undertale_(series)video_game_character video_games yandere yaoi

2010s 2018 2boys 2d 2d_(artwork) anal animated_skeleton artist_name big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket blue_tongue bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers chain chains clothed crying crying_with_eyes_open digital_media_(artwork) dominant dominant_male domination duo ectopenis ectoplasm ectotongue fontcest ganzooky gay genitals gradient_background hooded_jacket hoodie incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller male male/male male_penetrated male_penetrating male_penetrating_male maledom monster monster_boy non-con non-consensual noncon nonconsensual nsfwsinningsans open_mouth orange_background orange_penis papyrus papyrus_(undertale) papysans penetration penis rape red_gloves red_scarf sans sans_(undertale) scarf seme_papyrus sex sibling_incest siblings simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom submissive sweat tears top_papyrus tumblr_username uke_sans undead undertale undertale_(series) video_game_character video_games yandere yaoi

2010s 2019 2d 2d_(artwork) anal animated_skeleton anon anonymous_male arms_behind_back bandage bandages blue_hoodie blue_jacket blue_penis bottom_sans bottomless bound bound_arms bruise bruises crying digital_media_(artwork) duo ectopenis ectoplasm faceless_male gay hooded_jacket hoodie injury jacket male male_only male_penetrating monster non-con non-consensual noncon nonconsensual partial_male partially_clothed penetration penis rape rope s2ames2 sans sans_(undertale) sex simple_background skeleton solo_focus submissive tears tied_up trembling twitter uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games white_background yaoi

2010s 2017 animated_skeleton begging_to_stop blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed comic comic_page comic_panel crying dominant dominant_male domination duo english_text fontcest glowing_eye incest intraspecies male male_only maledom monster monster_boy non-con non-consensual noncon nonconsensual papyrus papyrus_(undertale) papysans pleading sans sans_(undertale) seme_papyrus sequence sequential sibling_incest siblings skeleton soul soul_sex speech_bubble submissive supermuuh tears text text_bubble top_papyrus uke_sans undead undertale undertale_(series) yandere yaoi