Speed(2006)

Speed

Revolves around a group of high school delinquents who unaccountably fight on behalf of various strangers that they befriend in a single meeting. In this story they come to the rescue of Okamoto Kanako who can't believe that Uehara Ayako, Kanako's tutor, really committed suicide. Based on the Kaneshiro novel of the same name, third entry in his "Zombie Series".