Haruka Takeuchi has been assigned to Ann Taku Academy as a temporary teacher. In her class is Mochizuki, a genius who doesn't attend school. "Youth isn't just about studying." Haruka tries to persuade Mochizuki, a maverick whose absence is tolerated by the school, to come to school, but... Mochizuki becomes enraged and pushes Haruka away, and begins to play with her unconscious body.