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!
When Koharu flees the mean streets of Tokyo for her hometown, she's horrified to find out that it's transformed into a special ward where men are allowed to take multiple wives to help combat Japan's declining population. Koharu's made up her mind to marry the mysterious (and slightly sadistic) Ryunosuke Date to save her family... but she'll have to share him with his two wives: the chic and sophisticated Yuzu (wife #1) and tight-lipped beauty Madoka (wife #2)! And what's this about a wedding ceremony with THREE blushing brides? And what about the honeymoon...?!