In my long-awaited home... I live with my wife's mother

They've been married for four years... Taro and his wife, Naoko, are looking around real estate in Tokyo along with Naoko's mother, Shizuka, to buy their own home. Finally, he finds a good property, but Taro was worried about the high price. "If that's the case, we'll pay a down payment, so let's live together?" Shizuka suggests that Taro and Shizuka will end up living together in two households. And then the life of living together with my wife's mother began. There are incidents lurking in his life that Taro had never expected...