An Undertale Fanfiction about a corrupt timeline and a Frisks adventure throughout the human world and the underground. Warning major spoilers for the game Undertale created by Toby Fox and many TV shows/books. Also I need a little help some of the scenes in here might be mature but I can't tell so if you think that this is a mutate rated story please tell me so I can change it. I don't want to get in trouble I'm just confused.