The reason why Satouchi, a problem student who had long refused to go to school, decided to participate in the school trip was to take advantage of his homeroom teacher, Sachiko, who had been more concerned about him than anyone else. Not only did she captivate the gazes of male students in their puberty, but she also ensnared her parents and male teachers with her lewd, massive breasts. He had been waiting for an opportunity to ravage her body… On the first night of the trip, late at night, Satouchi confirmed that Sachiko was heading alone to the outdoor hot spring. He then stripped off his clothes in the changing room and suddenly groped her large breasts from behind. 'Satouchi-kun! What are you doing?!' 'It's okay, everyone is asleep by now…' For both of them, a long yet short unforgettable three days began.
