It's a beautiful day at the pool, and the girls are enjoying themselves. One of the girls tells the other girls that she's going home, so they can all go swimming together. The other girls are excited, too, because they're going to go swimming with their teacher, who's coming to visit. The teacher tells the girls that he's here to give them a day to have fun. He tells them that hikari told him that she wants to play pool with everyone, and that she doesn't want to be seen wearing a swimsuit. He wants them to have a good time, and he tells them to be aggressive, because he wants to arouse the teacher's interest in her. The girls are all excited, and one of them shows off her swimming skills by playing "innocence" so that the teacher won't notice her in the pool. He's not a great swimmer, though, so he says he'll excuse himself and go swimming again. He says he has a crush on the teacher, but he can't reciprocate it, because the students are still his students.