This is about Sans (Undertale) and the reader coming closer together. This story is one of my best and I hope you guys enjoy.

What if Karl Heinz had a 4th wife which was human and yui was her daughter. Yui and her sister would be the first human hybrid. After her mother died she isolated herself in her room. Her brothers have tried to get her out for years everyone except for Ayato. One day something brought yui out of her room. Read to find out

Yui is from a royal family but she is a queen and a school Idol her parent died when she was six so that why she the queen her friends are also queen p.s this is going to be a ayato x yui

This is my first Yui and Ayato story.