is a Japanese
manga series co-written and illustrated by Banri Sendo and Shibuko Ebara, credited under their pen name
Peach-Pit. It was serialized monthly by
MediaWorks in their magazine
Dengeki Comic Gao! from March 2002 to December 17, 2005 and was later published into a ten volume set by the company. The manga was licensed and translated into English by
Tokyopop. A 13-episode
anime was adapted by MSJ and a
PlayStation 2 video game was produced by MediaWorks.