The man Koharu loved wasn’t cheating on her…he was cheating on his wife with her! And not only that…he was the third guy in a row to do so. Dejected, she leaves Tokyo for her hometown, and rejects a future of love and marriage for a simpler life. But things have changed—her parents are struggling, the café they ran is closed, and a creepy man keeps following her around. She thinks this may be it for her, until she learns that her hometown has allowed polygamous marriage, and she’s in that man’s sights as his third wife!
In Japan's only city where polygamy is legal, Koharu is now wife number three to Ryunosuke Date. When Koharu finally reaches the end of her rope in their marriage, she runs away from home--and straight into the arms of her old flame from high school! While Koharu's trying to decide whether she's having an affair or hanging out with an old friend, the Date's are enjoying their time with the sweet and innocent Urara. In fact, the whole family agrees they might like her even more than their missing wife...