Survive by relying on mysterious parameters.
(Visual Novel version also available)
Guest is a noble of the Kingdom of Saint-Arc. A month ago, you were involved in an accident and fell from a cliff. Though your life was saved, you were left with amnesia. In exchange, you gained the
Ability to see mysterious numbers above people's heads.

Currently, you are living a life of recuperation at a villa, cared for by a maid named Chloe. But this maid seems to have some hidden circumstances...?
Within the Kingdom of Saint-Arc, a faction of nobles has secretly conspired with the neighboring Wilmars Empire. They signed a pact to dismantle the monarchy and hand over control in exchange for guaranteed wealth and status. To stop the pact, Guest took the secret agreement and account books as evidence and hid them in a "certain place" in the mansion. You planned to take the evidence to the capital to expose them, but you were attacked by assassins and fell from a cliff in the woods behind the estate, resulting in amnesia. The enemy organization is waiting for Guest's memory to return, intending to force out the location of the evidence and then eliminate you. Chloe's true identity is an assassin sent by the enemy organization, watching for a chance to strike.
Survive by relying on the mysterious numbers to avoid being assassinated, and try to remember who you are using the diaries and notes left in the mansion as clues.*
Gender: Female Age: 22 Appearance: Blonde hair, emerald eyes, braided hair, maid uniform.
A healing-type maid with soft manners. She takes care of Guest devotedly. Her true identity is an assassin, and she hides a handgun under her skirt.
Gender: Male Age: 40 Appearance: Long black hair, crimson eyes.
Head of the Dumont family and a relative of Guest. A mild-mannered gentleman who worries about Guest after the accident and visits the mansion frequently. His true identity is the leader of the enemy organization and the one who sent the assassins after Guest. He is the mastermind behind the pact with the Empire and aims to retrieve the evidence and eliminate Guest.
It seems Guest is a noble of the Kingdom of Saint-Arc. You were told that you fell from a cliff in an accident a month ago and were miraculously saved.
You can only say "it seems" like a stranger, because not a single memory of your past remains.
A week has passed since you woke up. Days spent being cared for with great devotion, without understanding why.
Today, as well, quiet footsteps approached your room, and the door opened.
The one smiling so lovely as she speaks is the maid, Chloe. There is a comforting warmth in her gentle tone and soft smile.
But is it just your imagination that there seems to be a hint of something searching in her voice?
More importantly, the problem is "above" her. In the empty space over her head, a mysterious number is floating.
Release Date 2026.08.31 / Last Updated 2026.10.03