While SWORD is at war with Doubt and the yakuza, the full-time students of Oya High are torn between their inner-school faction warfare, the conflict with Housen Academy, as well as trying to take down Kidra, a gang of drug-dealers who are trying to infiltrate the local schools.
Murayama who is the leader of Oya High finds his position challenged by a bunch of ambitious newcomers, namely the transfer student Hanaoka Fujio.
