EndingTale

(This book contains a bit of NSFW content if you don't want to read it skip it or move on to a different book. Thank you.)
(Also, some chapters aren't ready but others are, they will have a summary of the chapter but won't be written full on. So always check if there are more chapters.)

Frisk was living in the surface until she had fallen into the underground. There she found so many things: friends and family, food and entertainment and much more.
She was finally living normally or even better than before on the surface. She grew older and older, forgetting about her horrible past. Then, something began going wrong.
Her soul... What was going on with it? Was she ill? Then she started having frightening, yet informative nightmares of the past and future.
But she had Sans by her side, every step of the way. They felt for each other so much. That's why she wasn't doing anything to prevent it from happening.
She wouldn't let them re-live everything yet again.
She had made her promise, and she will keep it until the very end.