Xbooru - 2022 2d 2d (artwork) animated skeleton blue blush blue hoodie blue jacket blush bottom sans bound bound arms chains clothed disembodied hands dominant pov drooling ectoplasm fingering fingering another fingering partner gaster gaster (undertale) hooded jacket hoodie jacket japanese text leg grab legs apart logo (pixiv30462562) male monster partially clothed partially nude pixiv id 30462562 potion pov restrained restraints sans sans (undertale) sanster seme gaster skeleton solo focus submissive sweat text top gaster uke sans undead undertale undertale (series) unseen male unseen male face video games yaoi