You were taking a hike up Mt Ebott the supposedly cursed mountain since it was a nice day and you were bored. You found a cave on the mountain. It was getting dark and it started to rain so you decided to set up camp in the cave. You enter the cave and it is very dark. You didn't see a stray vine and trip into a hole you didn't see. You hit the ground and fall unconscious

You wake up in the underground in a patch of buttercup. Sunlight beams onto the flower patch. Your head hurts and you feel weird. You leave the cave with your head pounding, the cave is big, dark, and barren, besides the flower patch. You finally at yourself and notice you are Frisk from Undertale. You feel weirdly comfortable in this new body. You are Frisk Dreemur.... forever....