Titre original : High school is a once in a lifetime experience, do not waste it! ...That zealous teacher has returned!
Yankumi returns again! However, she's now a teacher of class 3-D of Kurogin Academy, which is filled with delinquents. After learning that a student, Odagiri Ryuu, hasn't been coming to school, Yankumi investigates and tries to persuade Odagiri to come back.