Asahi, an office lady leading a dull daily life. Her secret pleasure is fantasizing about BDSM. She spends her days imagining herself being dominated by a master, indulging in masturbation at home and in the office. One day, she wishes to experience real BDSM and meets a dominant man through a dating site, but the result doesn't meet her expectations. Though hurt, her masochistic desires grow stronger. She becomes deeply drawn into the world of fantasy BDSM. Various BDSM plays unfold, including writing torture, erotic wheel, being tied spread-eagled, gagged, having a rope around her thighs, nose torture, breast clamp, and thigh rubbing, depicting a lascivious and erotic world.