Flowerfell is an AU (alternate universe) of another AU called Underfell which is an AU from Undertale. If you don't know what Undertale is you will not understand any of this. Like at all. If you don't know what Flowerfell or Underfell is... go do some research.
Will be sin. Based loosely off of "Some Day You're Gonna be Mine." There May be cussing and smut. The original story I'm going off of I believe is StarringBack's. I don't know the exact person.
A human, the first since ever, fell down the secret hole that leads to the world of monsters in the Underground. She only wanted a second chance, and he gave it to her. Then, everything began to change when the nightmares came. Nightmares of her surface life. Then, she gets weaker, and weaker . . . till she has change...