Clamp (Artistic group)

Ten-year-old Sakura creates a new kind of magic with her Clow Cards.

Fourth grader Sakura Kinomoto finds a strange book made by the wizard Clow to store dangerous spirits sealed within a set of magical cards. When Sakura opens it up, there is nothing left inside but Kero-chan, the book's cute little guardian beast, who informs Sakura that since the Clow cards seem to have escaped while he was asleep, it's now her job to capture them.