Mature Content Description

The developers describe the content like this:

This demo contains no sexual content of any kind.
The full game features soft, fully consensual adult scenes between characters who are all 20 years of age or older (full nudity, kissing, breast & genital contact, missionary / cowgirl positions, etc.), but none of those scenes are present in the demo.
There are no non-consensual acts, sexual violence, drug or alcohol abuse, bestiality, gore, or extreme violence anywhere in the project.

About This Demo

Emotion × Romance / Emotion-Raising Sim × Visual Novel

—100-Day “Farewell” Countdown 【Demo】

■ What’s in this demo?

Prologue → Chapter 1 (≈ 40 min)

Heroine-birth event / basic command tutorial / Emotion-UI tutorial

Feel the fluctuation of Joy, Anxiety, and Disappointment in real time

Save / Load / Options are identical to the full version

Chapters 2-5, multi-endings, and 4 soft H-CGs (+ variations) are only in the full game.

Save data from the demo cannot be carried over.

■ Game overview (shared with full version)

Two mysterious eggs hatch into Yukino & Rinne.

Your choices shake their emotions, and after all 5 chapters / 100 days the ending splits into Happy / Normal / Bitter routes—an emotion-driven multi-ending ADV.

■ Highlights to feel in the demo

Emotion-AI: the same command triggers different lines & reactions depending on current emotion.

Daily events: interact with the heroines morning / noon / night.

Experience the weight of choices and “heart” growth in a short playtime.

💛 Please add the full game to your Steam Wishlist!

If you enjoy the demo, clicking “Add to Wishlist” on Steam will notify you at release and greatly support development.

■Streaming & Content Creation

We allow streaming, gameplay videos, and monetization of this demo (ads, tips, channel memberships, etc.).

R18 content exists only in the full game and is not included in the demo. For details, please see the “Streaming Guidelines” in the Community.

■ Credits

■ Development, Scenario & Lyrics

Human Simulate (Satsumaimo)

■ Main Illustrator

Hidari-no-Eisei

■ Voice Cast

Yukino Shirasaki: Tanaka

Rinne Kurose: Pote Hula

■ Theme Song Composer

South&

■ Logo Design

Itinose Raise

■PV Production

haiji

Your choices will shape their hearts—and their future.

Take a peek at this “egg” story in the demo, and see where it leads!

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

For multilingual support, we use AI-powered machine translation, followed by human editing and quality checks. This ensures more players can enjoy the story, while we pay close attention to translation quality.

No AI was used for CG illustrations, character designs, or any in-game real-time content generation.
AI is used only in the translation process.