Three years of G-cup swimming club members who learned to have nipple orgasms, developed by a perverted teacher with a nipple fetish.

I was able to join the swimming club I had been learning from a young age, and I thought it would begin a hopeful school life. One day, while practicing alone, a man reaches out from the water and plays with his chest. "Who? Ah, ahhhhh," I am sensitive and reacts to the hands of a man whom no one knows. The person who made me feel good about my reaction was my advisor, Mr. Tabuchi. The development of nipple sensuality for single teachers that began that day lasted for three years, and before long I was left in the slave with nipple orgasm...