Nanami and Airi are my childhood friends. I like both of them, and being indecisive, I couldn't choose and realized I was already an adult. Then, a new law to combat low birth rates, "polygamy," was implemented! Thus, the three of us became a couple, but a battle for me erupted between the two who were once close, even though we're married—a love triangle with betrayal! Airi secretly gives me a blowjob, and I lie to Nanami to enjoy mixed bathing... Despite the complicated triangle, since we're married, we can freely have unprotected sex for baby-making! This rare polygamy... Will I ever have a harem...?
