Yao Bamboo arrived at the Kanatei Gakuen as a temporary teacher. In the class she was assigned to, there was a student named Mochizuki who was a genius despite being truant. 'Studying isn't everything in youth,' and since the school tacitly allowed his truancy, Yao tried to persuade him to come to school. However, this enraged Mochizuki, who pushed Yao away and began to molest her unconscious body.
