Kamui is forced into a psychic duel with Zukamori Sakura, and worse still his powerless childhood friend Kotori is also drawn into the fight. Meanwhile, Sora and Arashi comb the streets of Tokyo to find the rest of the Seven Seals, and a team of scientists unveils their genetically engineered psychic creation, who, unbeknownst to them, has already taken sides in the Battle of Armageddon. As Kamui's best friend Fuma starts uttering strange prophecies, the worst is yet to come: Kamui's closest living relative Tokiko steps back into the picture, bearing a magical gift that will have grave consequences. This volume also includes a Yuzuriha Nekoi side story.

CLAMP is the collective pen name of the four woman group responsible for Card-Captor Sakura (soon to premiere on Canadian TV as Card-Captor Niki *what a cool name! ^__^*). X/1999, as it is known in the US, is one of their more mature works. But really, what is it with CLAMP and Tokyo Tower?

X/1999: Duet is written and drawn by CLAMP. It is 184 pages long and retails for $15.95 in the U.S. and $23.95 in Canada.