16:9 aspect ratio 3d 3d animation 16:9 4k unmakeyourself_(artist) High resolution Very high resolution Female Fur Male Mammal Open mouth Penis Large filesize Animated Video Extremely large filesize No audio Breasts Duo Nude Erection Tongue Animal Fish Genitals Marine Digital media (artwork) Webm Widescreen White body White fur Colored sclera Bovid Black sclera Caprine Source filmmaker (artwork) Long ears Swallowing Undyne Asriel Dreemurr (God Form) Undertale Undertale (Series) Boss monster (undertale) Corruption Parasite Swallowing parasite