1014879

16:9 16:9_aspect_ratio 1920x1080 2010s 2018 2boys 2d 2d_(artwork) animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bottom_sans bound_wrists brother brother/brother brother_and_brother brothers collaboration crying crying_with_eyes_open digital_media_(artwork) dominant dominant_male duo ectopenis fontcest genitals grabbing_own_penis grabbing_penis holding_own_penis holding_penis imminent_rape imminent_sex incest iniquityhalo larger_male lowest-of-dirt lowest_of_dirt macro macro_male macrophilia male male_only maledom malesub micro micro_male microphilia non-consensual nonconsensual nude orange_penis papyrus papyrus_(undertale) papysans partial_male penis precum rape rope sans sans_(undertale) seme_papyrus size_difference skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom solo_focus submissive submissive_male tied_wrists top_papyrus tumblr twitter uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi

16:9 16:9_aspect_ratio 1920x1080 2010s 2018 2boys 2d 2d_(artwork)animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bottom_sans bound_wrists brother brother/brother brother_and_brother brothers collaboration crying crying_with_eyes_open digital_media_(artwork)dominant dominant_male duo ectopenis fontcest genitals grabbing_own_penis grabbing_penis holding_own_penis holding_penis imminent_rape imminent_sex incest iniquityhalo larger_male lowest-of-dirt lowest_of_dirt macro macro_male macrophilia male male_only maledom malesub micro micro_male microphilia non-consensual nonconsensual nude orange_penis papyrus papyrus_(undertale)papysans partial_male penis precum rape rope sans sans_(undertale)seme_papyrus size_difference skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom solo_focus submissive submissive_male tied_wrists top_papyrus tumblr twitter uke_sans undead undertale undertale_(series)unseen_male_face video_game_character video_games yaoi

16:9 16:9_aspect_ratio 1920x1080 2010s 2018 2boys 2d 2d_(artwork) animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bottom_sans bound_wrists brother brother/brother brother_and_brother brothers collaboration crying crying_with_eyes_open digital_media_(artwork) dominant dominant_male duo ectopenis fontcest genitals grabbing_own_penis grabbing_penis holding_own_penis holding_penis imminent_rape imminent_sex incest iniquityhalo larger_male lowest-of-dirt lowest_of_dirt macro macro_male macrophilia male male_only maledom malesub micro micro_male microphilia non-consensual nonconsensual nude orange_penis papyrus papyrus_(undertale) papysans partial_male penis precum rape rope sans sans_(undertale) seme_papyrus size_difference skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom solo_focus submissive submissive_male tied_wrists top_papyrus tumblr twitter uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi

! ... 2010s 2017 2boys 2d 2d_(artwork) 3koma :v animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blush bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers comic comic_panel dialog dialogue dialogue_box digital_media_(artwork) duo english_text fontcest frisk frisk_(undertale) gasp gay grabbing_arms grabbing_wrist human incest indoors larger_penetrating larger_penetrating_smaller lowest-of-dirt lowest_of_dirt male male/male monster monster_boy nude on_floor open_door orange_blush papyrus papyrus_(undertale) papysans partially_colored penetration sans sans_(undertale) seme_papyrus sex sex_on_floor sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom surprised surprised_expression text text_box top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games walk-in yaoi