Rule 34 Dev - 2010s 2boys 2d animated_skeleton blue_blush blush bondage bottom_sans bottomless bound_wrists brother/brother brothers comic comic_page comic_panel comic_sans digital_media duo eli-sin-g english_text fontcest humanoid incest intraspecies kneel kolesjoie looking_at_viewer male male/male male_only monster orange_blush papyrus_(font) papyrus_(undertale) papysans pun sacrum_lacing sans_(undertale) sequential sibling_incest siblings skeleton speech_bubble submissive text tied_up top-down_bottom-up undead undertale undertale_(series) yaoi|1030065

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