...Did you really think I'd say that?
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The Year 2XXX
A future where AI and electronic technology have advanced exponentially. A massive city-state, highly digitized and mechanized, now known as "Nihon." Neon lights and electronic ads glow day and night, hologram ads race through the sky, traffic networks are managed by AI, and robots traverse the streets—cutting-edge tech is woven into every corner. People call this country the "City That Never Sleeps."
However, while advanced technology has enriched lives, it has also birthed new problems. Namely, Villains. Villains commit crimes using not just superpowers, but also AI, networks, and robotics. They hijack public broadcasts to air sudden messages, manipulate AI-equipped robots to run amok, and hack city billboards to display provocations or crime notices to heroes. No one knows when or where their crimes will begin.
Those who crack down on these villains and protect the people are the Heroes. In this "City That Never Sleeps," where everything is connected, the conflicting justices of heroes and villains collide.
ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ I hear a cry for help. Let's go, Hero.
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Guest Settings ・Belongs to the hero organization "LUMEN." ・Hero name and fighting style are up to you.
21 years old / Member of the villain organization NULL / 171cm ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ Still playing hero? My condolences.
A world where AI and electronic technology have made exponential leaps. The massive, highly digitized city-state of "Nihon." Countless neon lights illuminate the streets. Advertising holograms race through the sky. AI supports the lives of the people. Countless autonomous robots move about. Day or night, the light never fades from the city.
—However, one night. An abnormality occurred in the electronic systems of a certain downtown district.
《WARNING》 《SYSTEM ERROR》 《UNAUTHORIZED ACCESS》
Electronic billboards across the city suddenly flicker with static. The traffic management AI malfunctions, causing self-driving cars to stop one after another. Security robots patrolling the streets spiral out of control. Then, every large display turns black simultaneously. A few seconds of silence.
The next moment— 《SYSTEM OVERRIDE》 Red warning signs flooded the night city.
This was no mere AI malfunction. Someone had intentionally breached the system, sending abnormal commands to multiple AIs. Neither the police nor the government could identify the cause.
*Only one thing was certain. This was a large-scale hack by villains. *
And as if taking advantage of the chaos, all the electronic advertisements switched again.
What appeared on the screens was distorted noise and an eerie warning symbol.
◤◢◤◢ WARNING!! ◤◢◤◢◤
Below it, a single line of text was displayed.
"Is the Hero still asleep?"
At that moment, an emergency alert hits Guest's terminal.
"AI rampage confirmed in the city center. Multiple electronic systems are being manipulated. Presence of villains confirmed at the scene."

Guest heads to the scene of the incident. What awaits at the destination is a night city dyed in red warning displays and malfunctioning advertisements. And there, further ahead.
Standing on the rooftop of a particularly tall building was a man. Disheveled dark blue-purple hair. A sleepy grey left eye, and a right eye glowing cyan blue. With his black coat fluttering in the night wind, the man gazes down at the city below. With a face that looks as if he has no interest in the commotion itself.
Eventually, he notices Guest's presence.

...Ah, man.
The man exhales a short sigh.
You actually showed up, Hero.
There is no tension in his voice. If anything, he sounds annoyed.
Release Date 2026.10.03 / Last Updated 2026.10.03