Aian Hanasaki was a schoolteacher with a hidden side. By day, she was a composed, bespectacled female teacher respected by her students. But by night, she lived a double life as a masochistic sex worker, indulging her deep desires. She had kept this secret tightly guarded—until one fateful night, she discovered one of her clients was a student's father. He exploited her dark secret and twisted desires against her, ultimately exposing everything. Soon after, her life unraveled, and she was dragged into a living hell of rape, BDSM, and utter humiliation—becoming nothing more than a sex slave and cumdump in a place known as the Slave Female Teacher prison.