月刊IKKI
is a Japanese manga series written and illustrated by Shunju Aono. It was serialized in Shogakukan's "seinen" manga magazine "Monthly Ikki" from January 2007 to June 2012, with its chapters collected into five "tankōbon" volumes. It was adapted into a live-action film released in June 2013. In North America, the manga was licensed for English release by Viz Media.