This is a special episode of AV featuring a male and female surveillance camera tracking a stepbrother and sister who have had unprotected sex. On the other side of the magic mirror is a pregnant older sister (=wife)! A high school girl and her lecherous husband engage in forbidden penetration sex in a private room when they are alone!! ...Then what happens next: The sister's repeated unfaithful intercourse, kept secret from her sister, is secretly filmed within the family. DVMM-388

A special episode following the investigation into the stepsiblings' forbidden sexual encounters behind their sister's (wife's) back! Worried about their growing distance and awkward relationship, the pregnant sister invites them to a "game to deepen their sibling bond" at a special studio! In an effort to get closer, the husband, who crossed the line after having sex with his high school sister, is offered an additional reward: "Secretly film him having sex with his stepsister again at home, and you'll get an even bigger bonus!" The footage shows the stepsiblings being forced into sexual acts, and the stepsisters, confused but unable to refuse, in various poses! The physically compatible stepsiblings repeatedly engage in unfaithful sex! Although it's an ideal family, a breakdown in their rationality leads to their infidelity being successfully filmed.