Xbooru - 2010s 2018 3koma animated skeleton bigger penetrating bigger penetrating smaller blue blush blue penis blush bottom on top bottom sans bottomless bottomless male brother brother/brother brother and brother brother penetrating brother brothers comic comic panel comic sans couch drooling duo ectopenis elbow gloves english text fallen9choirs fontcest furniture gay gloves incest larger penetrating larger penetrating smaller long gloves male male/male male only male penetrating male penetrating male monster monster boy on back orange blush orange penis papyrus papyrus (font) papyrus (undertale) papysans partially clothed partially clothed male penetration power bottom red gloves red scarf sans sans (undertale) scarf seme papyrus sex sibling incest siblings skeleton smaller penetrated speech bubble sweat text text bubble thought bubble top papyrus topwear uke sans undead undertale undertale (series) yaoi | 1014448

2010s 2018 3koma animated_skeleton bigger_penetrating bigger_penetrating_smaller blue_blush blue_penis blush bottom_on_top bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers comic comic_panel comic_sans couch drooling duo ectopenis elbow_gloves english_text fallen9choirs fontcest furniture gay gloves incest larger_penetrating larger_penetrating_smaller long_gloves male male/male male_only male_penetrating male_penetrating_male monster monster_boy on_back orange_blush orange_penis papyrus papyrus_(font) papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration power_bottom red_gloves red_scarf sans sans_(undertale) scarf seme_papyrus sex sibling_incest siblings skeleton smaller_penetrated speech_bubble sweat text text_bubble thought_bubble top_papyrus topwear uke_sans undead undertale undertale_(series) yaoi

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