SAME-250 Pleasure-Torture Female Body Modification: Yuki Takeuchi, a female investigator who had an orgasm-inducing device implanted in her brain and was forced to climax repeatedly by the person she hated most in the world.

Her younger brother was murdered by an unknown assailant... Determined to track down the killer, Yuki became an investigator herself. The pharmaceutical company "BLOSSOM" emerged as a lead in the investigation of a series of gruesome, bizarre murders. While the company appeared legitimate on the surface, Yuki obtained intelligence revealing that, behind the scenes, they were researching devices capable of controlling human will. She went undercover as a researcher but had her true identity exposed— only to be reduced to a test subject for a "pleasure-based brainwashing experiment" that threatened to erode her very personality...