MIDA-044 A busty office lady's secret is discovered by her boss, and she is trained to become a premature ejaculation slut.

Aoyama Nanami, a seemingly innocent office lady, harbors a secret. Tonight, her disliked boss, an uncle, takes her to a private room. This seemingly ordinary room becomes the beginning of her downfall. The uncle's rough hands ruthlessly tear open her shirt, revealing her full, large breasts. He kneads them while mocking her sensitivity, his fingers probing under her skirt, finding her already soaking wet. "What a slut, getting wet so easily," the uncle's words are humiliating, yet they only arouse Nanami more. He presses her down on the tatami mat, his thick penis thrusting hard into her cunt, each thrust filled with the force of conquest. Nanami begs for mercy, yet cannot stop her moans; her premature ejaculation leads her to climax quickly, her juices spraying everywhere. The uncle, however, doesn't let her go, continuing his frenzied assault until she is completely enslaved, becoming his wanton plaything.