Akihiko, who quit his job at a major insurance company and started working at his father's factory, is attracted to his mother-in-law, Maiko. - She finds Maiko talking to a man she doesn't know on the street and takes a picture with her smartphone. - He threatens, but is flatly refused. - Akihiko, who holds a grudge against him, obtains an aphrodisiac and begins to train Maiko as a sex slave. More..