Tokyo is paralyzed by a relentless wave of brutal murders. You are Cerberus, the police department’s top detective, yet your eyesight is steadily fading away. As your vision deteriorates, familiar investigative techniques become impossible, and you must master entirely new ways to hunt the killer.

Gameplay evolves with every chapter. It begins with traditional visual investigation and gradually plunges into near total darkness, where sound, touch, and pure logic become your only tools.

Conduct interrogations blind: catch lies in trembling voices, awkward pauses, and subtle shifts in tone. Record conversations, compare testimonies, and build your case through what you hear. Explore crime scenes by moving a cursor hand across the screen, guided by spatial audio and tactile feedback.

Every choice you make reshapes the investigation and decides the fate of Tokyo’s people.

One overlooked detail, one wrong suspect, or too much pressure from above can send the entire case spiraling toward disaster. Multiple endings await, each shaped by your decisions. Uncover the hidden connection between your illness and the murders before the last sliver of light vanishes forever.

Progressive blindness that manifests in three radically different forms, each changing how you perceive and play:

1. Pixel vision: faces and objects dissolve into huge, crude squares, as if something is desperately trying to hide the horror from you.

2. Black censorship: crucial clues, evidence, and even people appear violently scratched out with thick black ink smeared over reality itself.

3. Invisibility: the most disturbing stage. Objects and clues are physically there (you can touch them, hear them shift, feel their weight), yet your eyes see nothing at all. A table looks perfectly empty while a blood stained knife or a decisive document waits for your hands and ears to find it.

Can you stop the killer before darkness swallows everything?