週刊少年ジャンプ
The manga was first published in Shueisha's magazine "Weekly Shōnen Jump" as a two-part one-shot on March 5 and 12, 2002. The regular serialization started with the publication of the first chapter in "Weekly Shōnen Jump" on July 23, 2002, where it was serialized weekly until its conclusion on June 15, 2009.