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!

When the person you love most is violently taken away from you, you set out on a dangerous journey to find out what happened to him, making your life goal to discover the truth. What you don't expect though, is to uncover secrets that come out of the darkest abyss, accompanied by a cannibalistic creature with a navy-blue mask that eternaly cries back tears.

How much can a human take before the reality around him snaps? For you it was the most unbearable loss of them all. It was more than enough to drown everything sane inside of you. The monster rose inside of you and everything went up to flames. But you are not alone. Madness knows no limits. The same goes for love.~~ A Jeff The KillerXReaderXEyeless Jack fanfiction