I was also able to join the swimming club, which I had been taking lessons in since I was little, and I thought my school life would begin full of hope. One day, while I was practicing alone, a man's hand reached out from the water and groped my breast. "Who? Ah, ahhh." Being sensitive, I reacted to the man's hand, who I didn't know. Encouraged by my reaction, the owner of the hand turned out to be my advisor, Mr. Tabuchi. The single teacher's nipple sensitivity training, which began that day, continued for three years, and before I knew it, I had become a nipple orgasm slave...