Although Manami Oura is married, her life is not happy because the sex is not very good, which makes the two often argue and that day Manami got angry and left, that day she accidentally met a swimming instructor, a tall and strong guy who was completely different from her husband. They both went to the swimming room so he could teach her how to swim after chatting for a while, and then… ; The secret story started from there…
Sneaking around with the swimming teacher
