BM Pharmaceuticals was developing a devilish aphrodisiac that was said to be the craziest in history. One day, they received information that the drug under development had fallen into the hands of the opposing group, the Maruyama Association. It had been stolen from the laboratory by unknown hands. The person suspected was Kisaragi Rumi, the company president's secretary. She was immediately imprisoned and tortured, but she desperately protested her innocence. They tried to get the mastermind out of her body, but Rumi, who knew nothing, had no way of answering, and the torture escalated to the most cruel methods ever used against a woman.