There are countless spaces in the universe, and in the gaps between these countless spaces there is a small shop called "Sakura". This small shop has never been found because it only accepts and makes transactions with souls with deep obsessions. It can fulfill any wish of these souls, as long as they pay the same price of souls. No one knows the identity of the owner of this store, only that her name is the same as the store, and she is often accompanied by a talking black cat with a bad temper, Ah Qi.
It is said that Sakura is waiting for someone, someone she doesn't know who...