gelbooruhttps://xbooru.com/index.php?page=atom&tags=1:1 1:1 aspect ratio 1boy 2020s 2022 2d 2d (artwork) animated skeleton blush lines bottom sans bound wrists digital media (artwork) legs spread male male only malesub nude nude male purplebluepen45 sans sans (undertale) skeleton socks socks on socks only spread legs submissive submissive male tied up tied wrists trembling uke sans undead undertale undertale (series) video games youfoundta2024-05-17T20:15:08Zgelbooru