Sachiko was not only a female teacher but also a sex slave to a certain student. Her affair with a colleague was discovered by the student, and she was forced into a physical exchange to keep the truth hidden. Sachiko had no choice but to succumb to the blackmail, as losing her teaching job was not an option… However, the student's demands escalated over time. In the school restroom, in the classroom, even with other students nearby, she was ordered to perform sexual services. If she refused, everything would be over; if she made a sound and got caught, everything would be over. Sachiko could only endure the humiliation, trembling.
