The reason why Matsumoto, a problem child who had been absent from school since the start of the new semester, decided to participate in the school trip... It wasn't because he felt like going to school, but because of the voluptuous body of his homeroom teacher, Mami, who was the only one who cared about Matsumoto. He was eagerly waiting for an opportunity to get his hands on her voluptuous, jiggling busty body that would catch the eye of any man. On the night of the first day of the school trip, Mami came to see Matsumoto, who had not seen her in a long time. "Why don't you come to school soon? Everyone is worried about you." "...If you can teach me something other than studying..." Matsumoto could not resist, so he hugged Mami and buried his face in her defenseless busty body...