Natsuki lives with her father, while her neighbor Fujita harbors a twisted love for her, a beautiful girl since childhood. Her father trusts Fujita, but Natsuki deeply despises the man who sometimes looks at her with lewd eyes. Just then, her father goes away on a business trip, and Fujita, seeing this as an opportunity, decides to make Natsuki his own. He uses the "hypnotic software" he's acquired… "Now you're my slave maid," he forcibly manipulates her personality through hypnosis, turning the loli with her large breasts into a sex toy.