Sawada and Yamaguchi ((ShinKumi)) story. Where was Shin all these years? Did Shin and Yankumi never meet? Secrets, stories no one shared with us? New romances, and friendships that blossomed. {Main characters: Yankumi, Shin, Kuma, Kuroda, Odagiri, Yanbuki, Kazama, Ogata, Reita, Kudo, Shinohara, and many more.}

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?