Four years after marriage, Taro and his wife, Naoko, were looking around real estate in Tokyo with Naoko's mother, Shizuka, in order to purchase a home. Finally, he finds a good property, but the price is high, and Taro is puzzled. "Then I'll pay the down payment, so shall we live together?" And cohabitation life with his wife's mother that began. A happening that even Taro didn't expect lurked in that life...
