A little fate (demon slayer fanfiction based) book one

Ameno hubi, a female human. Tale of a young girl who is mostly carefree in her village. She's somewhat tomboyish and enjoys hanging out with her friends. One day she encounters a demon that scares her half to death. This is where the story gets interesting.... is she willing to join him?

(Demon character names don't belong to expect Ameno hubi)