The Mugen started by two childhood friends Kohaku and Tatsuya. Both shared the same passion; racing with their motorcycles for eternity. Shortly, Ohta, Konishi, Tsukumo, Cobra and Yamato joined their group. Tatsuya decided to open his Itokan Diner, with his sister Naomi. A place were the 'Mugen' could return anytime and call home. Kuryu Group turned its attention all around the Mugen. Cause of the ill deeds of the Mighty Warriors. Around that time the Muge

Yankumi accepts an offer to work at Akado Academy. Once again she has to deal with a 3D class full of punks, with two rival groups fighting for the leadership. A new transfer male student 'Mae Hitori', who is actually a girl, joints the 3D class. What is Mae's secret, and what made her to join the 3D class? How will she and the boys blend in?