Ep. 4: Kimura's teaching motives and the class swimming pool activities

4

Kimura states he became a teacher because he likes high school girls, drawing criticism from the girls and praise from the boys. During swimming class, students compare body measurements while Nyamo kicks Kimura out of the pool area despite his observation permission. Chiyo attempts to swim using a dog paddle, and Osaka tries floating by playing dead. Yukari interrupts by belly-flopping into the water, allowing Kimura to return. She later challenges Nyamo to a relay race but suffers a leg cramp, leaving Nyamo to care for her. Meanwhile, students from both classes compete in their teachers' places. The group discovers Kimura hiding behind a bush, where he was actually collecting cans and bottles for recycling and charity.