gelbooruhttps://xbooru.com/index.php?page=atom&tags=2boys animated skeleton artist name bottom sans brothers clothed duo fellatio fellatio pov fontcest glowing glowing penis incest looking at viewer male male only male pov monster papyrus papyrus (undertale) papysans pov sans sans (undertale) seme papyrus skeleton solo focus top papyrus uke sans undead undertale undertale (series) unseen male unseen male face xmatsukisinsx yaoi2024-05-23T19:33:24Zgelbooru