The Spiral Flower(2008)

Rasenbana

Haru Habaki, a 16-year-old who has been a junior delinquent since middle school. After his sister gets caught in a fight and injured, Haru decides to run off on his own. However, his mobile phone gets an odd email message about a "Habaki Hunt." Now, a shadowy group called the Kidō (The Way of the Demon) is pursuing him.
Story & Art by Shinya Kuwahara.