Chie-sensei is a popular teacher at a boys' school. He is usually quiet and serious. He even blushes at the innocent dirty jokes of his students... I transformed him into a woman in the classroom late at night on the fifth day of my teaching practice. The musky scent of her sweaty hair, the lewd sounds of a female that are delayed in the classroom, her desperate oral sex, and her huge breasts that look like a full moon drawn with a compass... I, who have delayed ejaculation, erupted for the first time at the sight that was beyond my imagination. On the last day of my practice, you were teaching me about pi, and I couldn't help but stare at your breasts hidden under your suit and swallow my saliva... a perfect circle that only I know. My crotch was hot and swollen, and I couldn't stand up when the signal to stand up came... 34 years have passed since then... As we were demolishing the school building from that time, I suddenly remembered and tears started to flow...