To atone for her younger brother's mistake, gentle and kind-hearted beauty Miyu Morita arrives at a man's room, prepared to endure ten days. Unbeknownst to herself, she gradually awakens to the pleasures of masochism. Her alluring body, with fair skin, big tits, and a perfect ass, fits perfectly into the "Flesh Toilet Training Facility" series, and her seductive expressions during torment suit her well. From day one, she masturbates naked with a vibrator; by day three, she wears a collar, stands in a dominant pose, and performs blowjob and deep throat, getting pounded hard on the table and creampie-filled with semen. On day five, she's taken doggystyle naked in the kitchen; on day seven, she's brought to relentless orgasms through clitoral torture in the bathtub. By the final tenth day, strict sexual training floods her with pleasure, and she obediently serves as she's taught, awakening fully to her sexuality. Miyu writhes, her huge bouncing breasts on full display, moaning "It feels so good, your cock," as she's creampie-filled. Even when told she's free to leave, her decision is far from over.