"My first love partner, my first experience was with my homeroom teacher." Pure love sex drama depicting a secret physical relationship that can't be told to anyone for 10 years.The days of platonic SEX that I hid in the school and sought each other many times.Even after graduating, when they meet again at the alumni association, they are burning up and wanting each other at the hotel.Even after getting married, I can't forget about Mr. Tsukasa.