Married woman Koharu participates in a special documentary, filming her own sex with another man on her husband's orders. In her second year of marriage, the sweet-faced and modest woman records her affair at a hotel. The footage captures her wiping away tears as she showers, suppressing her desire to return home. While receiving foreplay, she stubbornly insists, "I'm not coming," yet ultimately squirts and breaks down crying. With her small mouth, she asks, "I'm going to lick it... is that okay?" before melting into a blissful expression as she accepts penetration. Still holding the camera, she reaches climax quickly, writhing in pleasure even while lying on top of the man. Afterward, wearing sexy lingerie, she repeatedly cums while grinding her hips, declaring, "This cock isn't my master's, but it feels so good." This shocking documentary exposes the hidden impulses and desires within a married woman.