Angelic Layer - CLAMP

In the future, the most popular game in the world is Angelic Layer. Contestants must raise and train their own 'Angels' (or fighting dolls) to compete in tournaments. Enter Misaki Suzuhara, sixth grade Angelic Layer prodigy. With her speed-type angel, Hikaru, many people think Misaki stands a chance at winning the championship. She'll have a lot of help along the way, but the road to victory will be not be an easy route, especially for someone as young as Misaki.

(Source: Tokyopop)

Angelic Layer was published in English by Tokyopop from June 25, 2002 to March 11, 2003 and by Dark Horse in two-part omnibus volumes on September 19, 2012 and March 27, 2013, respectively. It was also published in Spanish by Editorial Ivrea from May 2003 to January 2004.