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2010s 2boys animated_skeleton blue_blush blush bondage bottom_sans bottomless bound_wrists brother brother/brother brother_and_brother brothers comic comic_page comic_panel comic_sans duo eli-sin-g english_text fontcest implied_incest kneel kolesjoie looking_at_viewer male male/male male_only monster orange_blush papyrus papyrus_(font) papyrus_(undertale) papysans pun sacrum_lacing sans sans_(undertale) sequence sequential skeleton submissive text tied_up top-down_bottom-up uke_sans undead undertale undertale_(series) yaoi