Miyu Ehara

One day, all of a sudden, Misaki, the number one hostess of a club in Roppongi becomes a high school teacher! Of all classes, she is appointed as the homeroom teacher for Class 2Z, a special class for the troublemakers at the school. But, with her positive power, she takes the students head-on, without ever giving up! -- NTV

Kotaro Mochizuki (Haruma Miura) is a timid, introspective teenager who attends a private high school. One day he discovers a mysterious old book and from that day on, whenever he finds himself in a difficult situation, he turns into a samurai warrior.