No, it's not a typo in REBORN we don't have NPC cause they are dumb!

In REBORN we have AIC: ARTIFICIAL INTELLIGENCE CHARACTERS!

All non-story related AIC are created dynamically from a hardware seed. This means that at the first start the game calculates a number, based on some components of your computer, which is used for the creation of each AIC: You will never find the same AIC on another computer.
This means that the game experience will be REALLY different from one computer to another!

The names of the AIC are created from a database of 12.000 names and surnames, belonging to 7 different races!

The city of the beginning, is the last surviving city on earth after the meteorite holocaust. It is governed by the Onirigi caste and splitted into 6 castes.
The castes represent as many vertical levels of the city, which stretches for almost 1 km in height, and members of a caste can not have contact of any kind with other castes. The very rare accesses between the levels are always closed, and to guard them has been placed a special corp of humans that they call: "The Enhanced", The Legio Phoenix.

Many people who have stumbled into the Legio Phoenix have never returned home ...

Right after the meteor storm the human race almost became extinct and what's left is crammed into this city, no one really knows who or what the Onirigi caste is, some rumors that have spread speak of special beings with special powers, other rumors whisper the word demons.

What is after death...

There is no Heaven: Life and Death are just a state of things!

Get used to this statement, because your demon heritage will allow you to live on different existential planes, one of them is ALTERVERSE.

After death there is no heaven but only an existential void where the souls of the departed wander for eternity in search of satisfying their needs generated in life by the 7 deadly sins.

The real world and the Alterverse are complementary and during the game you will have to go through different entities to complete missions, understand the story, recover special items and fight terrible enemies.

In the Alterverse, time stops and all beings are suspended and immobile in time, while the demons that inhabit it will be hunting for your black soul: a very dangerous place, full of incredible treasures.

Different missions will introduce you to this place, when you die in game, a tomb will be created in the place where you died, and resurrect as a Reaper in the Alterverse, you will be able to roam freely.