A special class for one student was prepared for me because I had such a high libido that I started masturbating during class, and it was in danger of me graduating. My homeroom teacher was a beautiful teacher, Ms. Morisawa, who was rumored to have slept with every boy in her previous school. She put a chastity belt on my crotch, and said that if I got a good score on the test, she would take it off and let me ejaculate, and if I got a perfect score, she would let me have sex with her. I was so excited that such a beautiful teacher would take my virginity, so I studied hard with the goal of losing my virginity...