Card Captor Sakura

Cardcaptor Sakura is a manga series by Clamp. The series' main character, Sakura Kinomoto, accidentally releases the Clow Cards--powerful magical items--and must attempt to retrieve them. This is more complicated than it sounds, though, since the cards fight back.

Missions in this Continuum
Janet Ackerly and Cygna Hoshiko Sergio Turbo and Corolla
 * Love's Destiny
 * Lavender Shadow
 * Don't Forget the Canon