Planned Release Date: 2026

Mature Content Description

The developers describe the content like this:

The game may contain crude language, innuendos, general mature content. Depending on player's actions, you may encounter graphic violence.
All the character are over 18.

About This Game

Your sister visits during her university break. You used to take care of her way back, and now you get to experience a heartfelt reunion.

Experience the warmth of familial ties and cherish the precious moments, or take a different approach entirely.

Progression

Your actions will change Mayu's stats, making her responses vary in the end. Raising her affection will unlock new scenes and actions, progressing the story forward. She will act and respond differently in certain scenes depending on the choices you make. Some choices you make will also lead to different endings.

Features

Nemurimouto is a simulation game with Visual Novel elements featuring (planned content):

• Up to 20 Live2D special scenes
  
• Beautiful hand-drawn CGs
  
• Up to 5 hours of gameplay
  
• Highly replayable content
  
• Up to 50k words of interactions and story

Character

Mayu is your adorable younger sister. Blessed with a charming smile and an endearing demeanor, she's a touch spoiled, accustomed to getting her way with a playful pout or her charming personality.

Despite her bratty tendencies, she's a kind girl, her warmth shining through in unexpected moments.

She may be a bit of a troublemaker, but beneath that bratty exterior lies a heart of gold that cares deeply for her Onii-chan and those around her.