Undertale: Luck's story

Prolouge

You all know the story of the underground.... and how Frisk had rescued the monsters from eternal prison.... but do you know how they did it? How did they get underground in the first place? And how did the entrance on mt. ebott come to exist? well, it all had to do, with one boy named Brian.....

Brian's pov

My alarm clock was blaring out my least favorite song, I set it as my alarm so i have motivation to turn it off and get up, so i did so. I looked at my calendar over my bed and saw that tomorrow was my birthday, I was finally turning 16! I went to the bathroom and saw that my cat was scared about something. I don't know why, but I felt that a storm was coming....