"It's only at this age that I've realized I'm a nymphomaniac," says 37-year-old Ikemoto Asuna. She's a mother of one who works as a sales clerk at a local real estate company while also raising her child. Though she leads a fulfilling life, after 11 years of marriage, their nighttime routine has become completely monotonous. Her sexual frustrations have gradually built up, and recently she's found herself indulging in lewd fantasies in random everyday situations. Before she knew it, her daily masturbation...