I am a high school teacher who teaches Math. With my good looks, many female students call me my crush. Among them, Shinonome Mirei impressed me because she always didn't wear a bra when she met me. One day after school, I was packing my things to leave when Mirei stood in front of me. She said she wanted to have sex with me, which shocked me because she was only 17 years old and was so bold. I was about to refuse, but when Mirei took off her shirt to reveal her round breasts, I started to think again. And then…