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A prequel to Rojiura Hyōryūki. Set in the home of middle schooler Sumire Saeki, this is a life simulation game where players repeat daily routines and explore dreams. Choices made at different times of day influence the story and its endings.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
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This game is a prequel to Rojiura Hyōryūki, set before the currently available Early Access title –Old Book Festival Arc–.
It is a life simulation game set entirely in the protagonist’s home.
Players take on the role of Sumire Saeki, a third-year middle school student, and spend her days living alone inside the house.
The story begins in the winter of the year Sumire moved in. Unable to attend school and with her mother absent, she continues her daily life on her own.
One day, her classmate Sakurako Maeda visits to deliver school handouts, gradually bringing small changes to Sumire’s routine.
Although the game depicts a span of 12 days, it is implied that a much longer period of time passes within the story.
The game progresses by alternating between a Reality Part, which depicts daily life, and a Dream Part, where players explore the back alleys.
The Reality Part is a time-management life simulation.
Each day is divided into six time periods:
Morning, Late Morning, Afternoon, Evening, Night, and Late Night.
Players can choose one action per time period.
On certain days, free actions may be restricted during the Reality Part.
Available actions mainly consist of everyday activities, such as:
Making a drink
Reading a book
Taking a bath
When Sakurako Maeda is visiting, some actions can be performed together with her.
In the Dream Part, players explore a maze modeled after the back alleys.
The goal is to navigate through the maze and find the exit.
While exploring, players can collect items such as food to recover stamina and talismans that aid exploration.
The maze layout and the conditions required to escape change depending on the day, meaning the same strategy may not always work.
Player actions in both the Reality Part and the Dream Part affect the ending.
There are three main endings, with six variations of post-ending monologues.
You can view the controls and gameplay instructions by pressing the TAB key to open the menu and selecting the “?” icon.
The lantern, obtained midway through the story, allows you to return to the center of the current map by equipping it and putting it away immediately.
Use this as an emergency option if you get lost or become stuck.
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