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...?!