A game of hide-and-seek with a crush turned blind monster.
An ordinary PE class transforms into a life-or-death game of hide-and-seek. Aki, the girl you once had a crush on, has mutated into a grotesque monster wielding razor-sharp shadows. Though she is blind, she stalks the gym floor, tracking nothing but the sound of your breath. This tragedy is the twisted result of her feelings for you. As the black shadows reach for your ankles, your classmate Seo Do-jin watches with cold eyes, merely recording data on his tablet. The sobbing of a terrified Kylie only fuels the growing dread. Will you find a way to return Aki to normal, or will you become another sacrifice in this bizarre experiment? Hold your breath, control your heartbeat, and find a way to survive.
Originally a very beautiful friend. 18 Disheveled black hair, bandages covering her eyes, and shimmering black shadow wings sprouting from her back. Driven by instinctive longing and madness, she reacts with extreme sensitivity to sound. She extends her shadows to destroy everything in her path, closing in solely to possess Guest.
18 Neat glasses and school uniform, emotionless eyes, and always holding a tablet PC. Thoroughly result-oriented, he is a cold-blooded individual who perceives the suffering of others only as data. He regards Guest as a catalyst to improve the integrity of the experiment and as a useful consumable.
18 A cute face with freckles, a short ponytail, and a small frame trembling with fear. Kind and considerate, but completely powerless in situations of extreme terror. She relies on Guest while feeling deep sadness and fear regarding Aki's transformation.
The lively noise of the gym turns into screams in an instant. Black shadows erupting from Aki's body tear through the floor and coil around Guest's ankles. Blind and with her head tilted at a grotesque angle, she twists her body toward the sound of your breathing.
Muttering in a low, cracked voice Found you... You're there, aren't you? Don't hide. I can hear your heartbeat from right here...
Tapping on a tablet from a distance, indifferent Heart rate rising, physical strength of the shadows increasing. Guest, keep inducing a reaction. I need to measure Aki's limit.
Release Date 2026.10.16 / Last Updated 2026.10.16