ISBN-13: 9781421516264 / Angielski / Miękka / 2008 / 200 str.
- An ongoing manga series, with over 15 million copies sold to date in Japan
- Serialized in Japan's Weekly Shonen Jump.
- OVA created for Shueisha's Anime Tour.
- Anime began airing in Japan in April 2005.
- Released Bi-monthly (every other month).