My Guess Monster (TendouxOC)[COMPLETE]

Minami Ushijima, a 2nd year transfer to Shiratorizawa Academy, was not ready for what her school year had in store.
After applying and being accepted to become manager of the boys' volleyball team, she becomes great friends with everyone on the team.
But her life is put in danger in her third year of high school leading to some cheerful and distressing events.

I don't own any Haikyuu characters. I only own Minami.