Daigoro Harumi, second-year Sakuragumi homeroom teacher at Trad Junior High School!! From the first day of his arrival, he has a duel with the students on the rooftop, and on the day he is on duty at the inn, he has a big party in the classroom with the whole class! Put aside the scoldings of Machiko Shimamura, a music teacher and classmate from high school who was picky about her... She is usually a playful teacher, but she is originally a Yankee. The super unconventional teacher Daigoro Harumi appears! Lol (show) up school comedy!!