being the bad guy

got this idea from someone from ao3 so the story idea is not completely my own but I hope you like it none the less!

I don't remember much I remember pain and a ringing noise oh! I also remember this game called undertale and its fandom but other than that I didn't remember anything and it was scary. when I woke up all I could smell was blood and all I could see was corpses and a really sad looking statue and then it hit me and I remembered a certain au called dreamtale.

basically someone wakes up in the body of nightmare sans just after the apple incident now they have to grow stronger and gain allies in order to reach their new goal becoming king!