Xbooru - 2boys 2d 2d (artwork) animated skeleton bottom sans bound clothed digital media (artwork) duo flowans flower flowey the flower flowsans gay interspecies looking at another looking at each other looking at partner male male/male male only monochrome monster mouth gag plant restrained sans sans (undertale) seme flowey skeleton tentacle tentacle on male tentacles on male top flowey uke sans undead undertale undertale (series) ut-2828282928 video game character video games vines vines tentacles white background yaoi