FNS-210 Yayoi Hamabe, a female college student, was betrayed by the senior she liked and passed around in an organized sex club.

A college girl was invited to a drinking party by a senior in her club whom she had a crush on. She was the only girl there. Just when she thought it was time to break up, the senior handed her a mysterious drink and said, "Shall we try the usual now?" That was the beginning of the tragedy. After ingesting the drink, which contained some kind of tainted substance, her consciousness quickly became clouded. However, her sexual senses were heightened, and her sensitivity skyrocketed. She climaxed at the slightest touch, and reached a massive climax upon penetration. An unforgettable sexual experience. The sad story of a college girl who continued to have sex until the end of her life.