JUC-550 My wife is about to give birth! My sister-in-law came to help with the chores and me Rio Hamasaki

Hiroki is a pregnant wife and husband who lives modestly in a small apartment. With her coming due, Mari's older sister, Rio, decided to stay for the time being as her housework helper. From the moment they met, Hiroki fell in love with Rio's charm, and his nose kept growing. While doing so, Mari suddenly goes into labor and goes to the hospital! The baby was born safely, and Torio Hiroki raises a toast at home. The two of them, who got drunk and lost their reason, are at home without Mari.