1039199

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_blush blue_penis blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing dated dominant dominant_male duo ectopenis fontcest from_front_position genitals glowing glowing_genitalia glowing_penis heart-shaped_pupils heart_eyes incest jacket kneel larger_male larger_penetrating larger_penetrating_smaller male male/male male_only maledom malesub monster off_shoulder orange_blush orange_penis papyrus papyrus_(undertale) papysans penis realdemdemdmensfw sans sans_(undertale) seme_papyrus sex skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom submissive submissive_male sweat top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games 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_blush blue_penis blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing dated dominant dominant_male duo ectopenis fontcest from_front_position genitals glowing glowing_genitalia glowing_penis heart-shaped_pupils heart_eyes incest jacket kneel larger_male larger_penetrating larger_penetrating_smaller male male/male male_only maledom malesub monster off_shoulder orange_blush orange_penis papyrus papyrus_(undertale)papysans penis realdemdemdmensfw sans sans_(undertale)seme_papyrus sex skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom submissive submissive_male sweat top_papyrus tumblr uke_sans undead undertale undertale_(series)video_game_character video_games 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_blush blue_penis blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing dated dominant dominant_male duo ectopenis fontcest from_front_position genitals glowing glowing_genitalia glowing_penis heart-shaped_pupils heart_eyes incest jacket kneel larger_male larger_penetrating larger_penetrating_smaller male male/male male_only maledom malesub monster off_shoulder orange_blush orange_penis papyrus papyrus_(undertale) papysans penis realdemdemdmensfw sans sans_(undertale) seme_papyrus sex skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom submissive submissive_male sweat top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games yaoi

2010s 2018 2boys 2d 2d_(artwork) anal animated_skeleton artist_name ball_gag big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller bondage bottom_sans bound brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing dated dominant dominant_male duo ectopenis ectotongue fellatio fontcest from_front_position gagged gay_sex grey_background handjob humping incest jacket kabedon larger_male larger_penetrating larger_penetrating_smaller legs_apart licking licking_penis male male/male male_only maledom malesub missionary_position monster mouth_gag multiple_views nude off_shoulder papyrus papyrus_(undertale) papysans penetration penetration_from_behind penis realdemdemdmensfw restrained restraints sans sans_(undertale) seme_papyrus sex sex_from_behind simple_background skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom solid_color_background submissive submissive_male thrusting thrusting_into_ass tongue tongue_out top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games yaoi

2010s 2017 2boys 2d anal anal_penetration anal_sex animated_skeleton ass big_dom bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blanket blue_eyes blush bondage bottom_sans bottomless bound bound_arms closed_eyes clothed clothed_male clothing digital_media_(artwork) domimant domimant_male drooling duo elemental_creature elemental_humanoid eyewear fire_elemental glasses grillby heart-shaped_pupils heart_eyes hisuivirus humanoid larger_male larger_penetrating larger_penetrating_smaller laying_on_side legs_grab line_art lineart lying_on_side male male/male male_only male_penetrated male_penetrating male_penetrating_male maledom malesub monster monster_boy on_bed penetration penis restrained restraints rope rope_bondage sans sans_(undertale) seme_grillby sex simple_background size_difference skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom submissive submissive_male sweat tied_up top_grillby topwear uke_sans undead undertale undertale_(series) video_games white_background yaoi