Working as a private tutor, I had been struggling for three months with my student Natsuki Hoshino, whose grades simply wouldn't improve. One day, I accidentally discovered she was a virgin, and she began teasing me relentlessly. After that, she started flashing her big tits and panty shots, pretending to be shy while mocking and playing tricks on me. Taking the torment further, she provocatively told me, "If you get a good score on the test, I'll take your virginity," shaking my emotions to the core. Under her control, I found myself increasingly drawn to her charm, cornered each day during our lessons.