週刊ヤングサンデー
is a Japanese manga series written and illustrated by Takatoshi Yamada. It was serialized in Shogakukan's "Weekly Young Sunday" from 2000 until the magazine's demise in 2008, at which point it moved to "Big Comic Original". Shogakukan has compiled its chapters into 25 "tankōbon" volumes as of June 2010. The series was adapted as a Japanese television drama series which aired between 2003 and 2006 on Fuji TV. In 2004, the manga won the 49th Shogakukan Manga Award for the General category.