**This is my first time in making story. So I didn't know what to put in the description.** This story is all about Asriel and Chara's backstory. I just love this game so much, so I decided to make a fanfiction. P/s: sorry if there's grammar errors in this story. My English isn't 100% accurate as it isn't my first language. I don't own any character in this story. Characters are belongs to perspective owner. #UndertaleByTobyFox I don't own any of this fanart in this story too. Every fanart are belongs to perspective owner. I'm just making a fanfiction. That's all. I hope you like my story! Sorry if the story is boring. I will do my best to make it interesting. :) <3

After Frisk goes missing, Caitlin, Frisk's twin sister goes looking for her in the the last place she saw her. MT Ebott, the mountain of dark legends, she finds a necklace that belonged to Frisk on the ground. Just like Frisk, Caitlin tripped and fell into the Underground. Caitlin finds things she never knew existed.