To be free of his dark visions, Kimihiro Watanuki will work for Dimensional Witch Yūko, a mystical woman quick to help those in a bind—for a fee.

Kimihiro Watanuki is a high school student plagued by ayakashi spirits, both of which are invisible to everyone else but him. The series begins when Watanuki stumbles, seemingly by chance, into a shop that grants wishes. The shop is owned by Yūko Ichihara, a mysterious witch of many names and esoteric renown. For a price, she offers to grant Watanuki's wish to be rid of the spirits. The price, according to Yūko, must be of equal value; so, as payment, he must become Yūko's temporary, part-time cook and housekeeper.

Yūko Ichihara is the sexy owner of a strange store which offers to make any wishes come true for a price. Kimihiro Watanuki has a special type of blood that attracts spirits and ghosts. He goes into the shop owned by Yūko Ichihara and asks her to get rid of the spirits. Yūko offers to do so if he works part-time at the store.