The new part-timer, Ai Sayama, keeps making mistakes, and I get annoyed, lusting after her voluptuous body and rubbing her breasts as I lecture her. However, Sayama suddenly loses her temper and pushes me down, shouting, "You're a damn virgin!" She presses her big ass against me mercilessly, and no matter how many times I ejaculate, her sexual desire never stops, and she treats my dick like a meat vibrator. From then on, even though she's just a plain married woman in front of the manager, when we're alone she changes completely and makes me cum like a sex slave...