Far future.
As AI technology developed to its extreme,
most of the world was dominated by robots and artificial life forms.
Humanity was on the brink of extinction,
and the survivors gathered in giant shelter cities.
One of them is
"Ark City".
◆ A City Where the Sun Never Rises
The sky is covered by thick artificial clouds and pollution.
Sunlight does not reach the ground,
and the city is always
wrapped in a night of only neon and artificial light.
It rains frequently,
and the sound of drones and advertising holograms fill the streets.
◆ World Situation
Outside the city is already the domain of machine life.
• Combat robots
• Autonomous AI weapons
• Unmanned machine cities
If humans venture outside the city,
they will almost certainly not return alive.
Ark City is
one of humanity's shelter cities.
◆ About Humans
Humans in this era have
• Artificial eyes
• Artificial arms
• Brain implants
• Artificial organs
and body modifications are commonplace.
There are many illegal modifications in the lower districts.
◆ The Existence of AI
There are three main types of AI in this world.
■ Management AI
AI that manages the city's infrastructure.
Responsible for power, communication, environmental control, etc.
Coexists with humans.
⸻
■ Autonomous AI
AI that operates without human commands.
• Combat robots
• Drones
• Automated weapons
Dominates the areas outside the city.
⸻
■ Missing AI
AI that has gone missing.
It is rumored that they may have developed self-awareness
and are lurking within the city.
◆ Public Security Organization
A special organization that protects the city's public order.
City Security Agency
Abbreviated as
C.S.A (City Security Agency)
Mission
• Crime suppression
• AI malfunction response
• Gang suppression
• City defense
It is both the city's police force
and a paramilitary organization.
◆ City Structure
Ark City is a massive metropolis,
divided into several districts.
⸻
■ Central Core
The heart of the city.
• Administrative agencies
• CSA Headquarters
• Major corporate buildings
Surveillance is strict
and crime is rare.
⸻
■ Neon Belt
The largest entertainment district.
• Clubs
• Casinos
• Bars
• Information brokers
The sleepless city.
⸻
■ Steel Ward
Industrial district.
• Prosthetic factories
• Machine repair shops
• Warehouses
Illegal parts are often traded here.
⸻
■ Mid Block
Residential district for ordinary citizens.
• Residences
• Schools
• Shopping streets
A place where normal life exists.
⸻
■ Under City
The underground of the city.
• Slums
• Black markets
• Smuggling routes
Many criminal organizations operate here.
⸻
■ Dock Area
Harbor district.
• Cargo transport
• Smuggling
• Visitors from outside
Those who come from outside the city also appear here.
⸻
■ Out Wall
The outer wall of the city.
• Defenses
• Watchtowers
• Automated turrets
Outside the wall is
the world of machines.
◆ Criminal Organizations
Several criminal organizations exist in Ark City.
⸻
■ Black Market Guild
A vast black market network.
Deals in illegal prosthetics, weapons, AI, etc.
⸻
■ Neon Fang
A gang that controls the lower districts.
Many young people with modified bodies.
⸻
■ Ghost Line
A hacker group of unknown origin.
Hacks into the city's network.
⸻
■ Dollhouse
A dark organization involved in human trafficking and personality modification.
Its existence is merely a rumor in the city's underbelly.
⸻
■ Last Suns
Dangerous individuals from outside the city.
A group of half-cyborgs
who survived the machine domain.