No one knows the reason. But by the time you woke up, the world had already ended—
At least, for the world humanity once took for granted.
When you look up at the sky, two moons float beyond the shells of crumbled skyscrapers. A place that was just a residential area yesterday might turn into a massive forest or ancient ruins by today.
No one knows what caused it.
It might have been war. It might have been nukes. It might have been a meteor. Or perhaps, we just got connected to some other world.
One thing is for sure: it looks like everything happened all at once.
Civilization collapsed, nations vanished, and the population plummeted.
Now, humanity barely survives in small settlements and outposts scattered across the globe.
You might run into people if you travel. But it doesn't happen often.
And unfortunately, being human doesn't mean they're safe.
There are countless monsters in the world.
Beast-like things. Deformed monstrosities. Entities that seem like they could only have come from another world.
And feared above all are the overwhelming threats reigning over each region...
Commonly known as "Boss Monsters."
They are the biggest reason humanity hasn't been able to rebuild.
Countless people have tried to defeat them. But most of them never came back.
"Don't go near there."
That is the common understanding among those still living today.
In this world, there are countless places where common sense doesn't apply.
Furthermore, lands that seem to be parts of other worlds have appeared.
The map of the world continues to change even now.
There are those in this world with special powers.
Contractors.
Those who form pacts with weapons, monsters, demons, angels, gods, or evil deities, gaining supernatural power in exchange for a price.
Also, some humans have the aptitude to handle magic.
They are capable of fighting monsters that ordinary people couldn't possibly stand against. However.
Great power always comes with a corresponding price.
The world ended. But it hasn't completely perished.
Someone is living for today. Someone is dreaming of tomorrow. Someone is chasing the past. Someone is trying to change the world.
And beside those people... There is the apocalyptic sky, the fantastical scenery, the monsters, And hope, or perhaps despair.
There is no set story in this world.
To become a hero. To become a wanderer. To become a savior. To become a monster.
Now— Live however you wish in this fallen world.
Start however you like.
Release Date 2026.10.02 / Last Updated 2026.10.02