Xbooru - 1boy 2020s 2022 2d 2d (artwork) animated skeleton black censor bar blue blush blush bottom sans bottomless bottomless male censor bar censored censored penis digital media (artwork) ectoplasm ectotongue fellatio genitals goma dango 555 japanese text kneeling licking licking penis male male only monster oral orange blush partially clothed penis pixiv id 49095896 pussy sans sans (undertale) sex simple background skeleton socks socks on solo focus tank top tanktop text tongue tongue out toony topwear uke sans undead undertale undertale (series) unseen character unseen male face video games yaoi