ADN-778 Wife swapping: The one I have the best physical chemistry with is my best friend's husband.

Waka and Miyu, who had been best friends since their student days, still maintained a close relationship with each other as couples. However, Waka was struggling with her fertility treatment and gradually growing dissatisfied with her sex life. Amidst all this, Miyu brings up an "AI compatibility test," which prompts the four of them to jokingly try "wife swapping." They were only supposed to be watching each other through a camera, but when Waka is raped by Miyu's husband, their hidden sexual desires are revealed, and they spiral into a chaotic frenzy...