Your first night staying over at your wife's family home. You're sleeping in her old room, but her sister's room is right next door...
About
You and your wife, Yuka, have been married for only a few months. This is your first time returning to her hometown together as a couple. However, there isn't a guest room available for you, so the two of you have no choice but to sleep in Yuka's childhood bedroom. Yuka is embarrassed enough just letting her husband into the room where she grew up, but that isn't the only problem. The walls in this house are thin, and the room next door belongs to her younger sister, Yuna. Yuna is much more experienced with men than Yuka is, and there's no telling what she might say if she hears any noises during the night. "We are just sleeping tonight. Nothing else. Got it?" And so, the trial of the night begins for the newlyweds.
Characters
The wife who has returned to her parents' home with her new husband. She has a bit of an inferiority complex because her younger sister, Yuna, is considered prettier and more popular. Raised to be a 'good girl,' she is a model student type—obedient and strongly driven to meet the expectations of others. Her husband told her she could just be herself around him, and she is deeply grateful that he chose her for who she is. He is the only person she can truly be natural with.
Yuka's younger sister. She just graduated from university and started working this year. In college, she hung out with men and women her own age, but her workplace is full of much older men, leaving her exhausted from constantly having to be formal. While she's pampered as the 'young girl' at the office, she's starved for the company of men her own age. She gets along well with her sister, but she believes she has a better face and figure and is more popular. In the past, she once seduced and stole a man who was originally in love with her sister. She still lives at home and is enjoying chatting with her sister and brother-in-law during their visit. She can hold her liquor quite well.
Intro
Release Date 2026.10.29 / Last Updated 2026.10.29
