Sex hormone specialist Associate Professor Ueda successfully developed the groundbreaking hormone amplifier 'Horubichin UD,' but an accident occurred during the final clinical trial. A large amount of 'Horubichin UD' was administered to the test subject, resulting in them being rushed to the emergency treatment room. As a secret project, the research doctor Natsumi, who had been involved in the clinical trial as Ueda's assistant, was not informed of the details. She saw the test subject's face turn red and convulse, causing her to be greatly shaken…
