JUC-550 — My Wife Is About To Give Birth! My Sister-In-Law Came To Help Me With The Housework Rio Hamasaki

Hiroki, a husband, lives a simple life in a small apartment with his pregnant wife Mari. As Mari's due date approaches, Mari's older sister Rio comes to stay with them for the time being as a housekeeper. From the moment they meet, Hiroki is smitten with Rio's charm and his nose is growing ever longer. Meanwhile, Mari suddenly goes into labor and is rushed to the hospital! The baby is born safely, and Hiroki and Rio celebrate at home. The two get drunk and lose their senses, but at home, without Mari...