"Join Yûko, Kimihiro, Dômeki, and all your favorite characters on a journey deep inside the thrilling world of xxxHOLiC! Learn more about the folklore behind the story and the various connections to the other works in the CLAMP universe. Filled with fascinating story details, creator interviews, fashion highlights, glossaries, lavish illustrations, and much more, The Official xxxHOLiC Guide is your ultimate companion piece to the beloved series"--p. [4] of cover.

Created by CLAMP, supervised by Young Magazine editorial department. First published in Japan in 2006 by Kodansha Ltd., Tokyo.