gelbooruhttps://xbooru.com/index.php?page=atom&tags=2010s 2019 2boys 2d 2d (artwork) bigger male bottom sans bottomless digital media (artwork) duo fire elemental gay grillby grillby (undertale) grillsans korean text larger male male male/male male only monochrome monster sans sans (undertale) seme grillby simple background size difference text top grillby uke sans undead undertale undertale (series) ut-2828282928 video games white background yaoi2024-05-14T10:11:49Zgelbooru