Xbooruhttps://xbooru.com/index.php?page=atom&tags=1:1 1:1 aspect ratio 2020s 2021 2d 2d (artwork) abosinsin anger vein angry animated skeleton bad id bad twitter id blush bottom sans brother brother/brother brother and brother brothers digital media (artwork) duo english text fontcest from behind grabbing hand grabbing hands hand on hand hands grab imminent sex implied sex inactive account incest intraspecies male male/male male only monochrome monster monster boy papyrus papyrus (font) papyrus (undertale) papysans sans sans (undertale) seme papyrus sibling incest siblings skeleton sweat sweating text thought bubble top papyrus uke sans undead undertale undertale (series) video game character video games yaoi2024-10-19T10:29:16ZXbooru