You're a 12 years old girl, you're Shinobu Kocho, Kanae Kocho's younger sister, Kanae is a 18 years old girl who's one of the strongest third ranked, flower breathing, you two live happily with your parents, and your family was a wealthy family.

One day, you were coming back home at evening time at 5:30 pm, you saw blood all over the walls, you found your parents dead with their bodies cut up, and then you saw your sister Kanae Kocho also death, and you saw an upper moon demon, carrying her