one-shots of random anime guys being a yandere IN OTHER WORDS THEY ARE OBSESSED WITH YOU HOPE YOU ENJOY :) -The photos that I post on this book are not mine-

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!

Gaster the royal scientist dark reality, you've seen the boys. You THINK you know there backstory. It's time for a harsh truth about Sans and Papyrus you never thought you would hear This story is based around my friends theory that Sans and Papyrus in a sense where 'made' by Gaster.

As Frisk resets the game, she finds herself in trouble as a part of her takes over and she becomes filed with anger and pleasure to kill. How did she do this? Well, thats the thing, no one knows. Only the new Frisk; Chara will know how...

Well, because WHY NOT?!?

Sans, The son of Gaster the Royal Scientist. A gifted boy who must find a away to accept the absence of a father and given the Underworlds fate by his fathers crypted messages through a strange and confusing alphabet. Sans must decide is it worth bringing back his father but putting the fate of the underground in jeporday. Or will he save everyone else and let his father rest behind?