(Y/N) is the soul of (soul trait/no fear or determination). She/he goes to school and meets a pink and brown haired female. That female was Betty, the soul of fear. (Y/N) later meets Kylie, who claims to be her sister, but then the tables turn and everything becomes confusing. Is Kylie REALLY Betty's sister? Is (Y/N) going to die? Speaking of, who is Frisk? Who is (Y/N)? I feel like someone erased all the memories of them. Oh well! What was I doing? Oh right! I was explaining this story, (Y/N) is the soul of (soul trait/no fear or determination). She/he goes to school and meets a pink and brown haired female....

Ever since the barrier was broken and monsters rose to the surface once more, it seemed like despite the odd reception that they received from the Humans of Ebott, everything was starting to take a turn for the better. But almost a year later, the others couldn't help but notice something different...specifically...SANS was different. The usual laid-back, wise-cracking skeleton was acting...strange. His smile was forced, he didn't tell jokes, he's deprived of sleep, and the demons that were thought to have been put to bed ages ago keep rising back to the surface to torment him. It was no secret anymore. Something was wrong...VERY wrong...but what? (Current Chapter Status: Chapter 46 Pending) Cover art by- @CarrieTheEnder Ranked #280 in Fanfiction 12/19/17 Come join the Cage Of Bones Discord group!- https://discord.gg/R4Q92Nnn

"Promise me one thing- just one thing only." Frisk nodded vigorously. "No one can know about this whole reset thing. Not Papyrus, not Asgore, not anyone. It would basically bring this world to the point of falling to pieces at our feet. If we weren't trapped between time and space already, very few of us wouldn't be able to handle that knowledge, and could drive those who couldn't to the edge. So, please. I'm begging you. When you reach the End, when you get us out of here for the umpteenth time, I don't care if you reset or not. Just don't tell anyone about it, and... Please don't go homicidal again, okay?" Frisk smiled meekly, and nodded. "I can do that. And don't worry about the reset." They gave Sans a small hug. "After that whole thing with Chara, there won't be any more." And with the final word, they opened the door to leave; before exiting they paused. "See you later."

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.

Warning! There is a chance that there will be spoilers for the pacifist run of undertale. I recommend finishing that before reading this. There won't be any spoilers for the no mercy run, so don't worry about that! Also, don't worry about anything NSFW/lemon if that's not what you're into-there won't be any of that here. You're a human that's fallen down into the underground. You've decided that you'll stay instead of going home after fighting Asgore and sparing him. Now, you had made some great friendships while in the underground-but one of those friends in particular was one you'd like to be a little more than friends with... Aaaa an X reader fic! I haven't done one of these before, but I hope you still like it!