Kasumi, 50, a housewife (married for 25 years) who lives in T City, Saitama Prefecture, applies for training in search of the ``ecstasy of being a slave.'' - A seasoned wife who has three experience with men is thoroughly trained in two parts: ``Strong sex course with locked room restraint'' and ``Masochistic humiliation course with outdoor exposure''. - The sexual desire that I had suppressed in my daily life explodes, I forget myself and devour perverted pleasures, and I go crazy in agony at being treated like a slave! - !