A slim high school girl caught the eye of a perverted masseur at the clinic. She was so naive that she accepted his sexual harassment even though she knew nothing about it. As time went by, he became more daring in his actions. Unaware of being sexually harassed, she unknowingly developed her body through training. By the time she realized what had happened, she was completely depraved and eagerly sought out men's penises! Note that the contents may vary depending on the recording method.