Clamp no Kiseki.

CLAMPノキセキ

CLAMP no Kiseki (CLAMPノキセキ, CLAMP's track or CLAMP's miracle) is a twelve volume series of anime books celebrating the 15th anniversary of Clamp in 2004. It is published in America by Tokyopop and in Spain by Norma Editorial. Each volume is a full-color, 32-page book that contains summaries of featured series, interviews with Clamp and friends of Clamp, artwork, and exclusive new short comics.