ADN-778 · Couple Swapping: My Best Friend's Husband Is a Better Sexual Match

Waka and Miyu have been best friends since their student days and continue to socialize as couples. However, Waka is struggling with trying to conceive and has grown increasingly dissatisfied with her sex life. When Miyu suggests an "AI Compatibility Test," the four decide to try "couple swapping" half as a joke. They intended to simply observe each other's progress through a camera, but once Waka is fucked by Miyu's husband, their hidden sexual preferences are exposed, and they spiral into a state of erotic chaos...