Although she has fair and supple skin and a very attractive body that makes many men desire her, Kokomi Hoshino still goes to the swimming center to train her body's flexibility. The lecherous teacher noticed Hoshino as soon as she entered, he secretly watched her change clothes and planned to conquer his innocent student. When Hoshino entered the changing room, the perverted teacher began to carry out his plan, he approached her from behind and embraced her, saying that he would teach her starting techniques and get used to the water before swimming. But there was no swimming technique to be seen, only the teacher demonstrating his exceptional lovemaking skills, making his student squirm with pleasure. So instead of swimming lessons, Hoshino had a delightful lovemaking session with her lustful teacher.