N.F. Chronology

## N.F. 01

In the first year of Nightfall, the Perishing Star struck, turning the surrounding land into deadly zones and triggering supernatural disasters everywhere.

### The Perishing Star Struck

An unrecorded celestial body fell out of obit, plunged into the atmosphere, and collided with the earth. In a matter of weeks, a colossal death zone took shape, with the collision point as its center.

### Catastrophes

After the Perishing Star struck, a myriad of supernatural disasters, called Catastrophes, ran rampant around the world on a grand scale. The environment deteriorated abruptly, the human population dwindled rapidly, and progress in technology and science came to a sudden halt.

### Nightfall Proclamation

While the world was being ravaged by Catastrophes, the bid for resources intensified the enmity between the various cities, posing an almost insurmountable barrier to the reconstruction of civilization. A series of conferences were held, and in the end, the representatives of these cities signed the Nightfall Proclamation, which ushered in the Nightfall Era.

## N.F. 21-25

### Hypercube

Dr. Keylan discovered the Hypercube, a key anti-catastrophe resource, and used it to contain the catastrophe. After that, DisCity was built.

### Expedition

In N.F. 21, Dr. Keylan assembled an investigation team built around a core of scientists. Risking their lives to explore the depths of the death zone, they ventured into the location where the Perishing Star collided with the earth, in the hope of finding a solution to the crisis.

### Survivor

In N.F. 23, shortly after the investigation team entered the death zone, all communications were cut off. Many years later, Dr. Keylan, the sole survivor in the team, walked out of the dead zone, carrying a unique resource that could resist Catastrophes and save humanity: Hypercube.

### Trailblazer Initiative

Under the direction of Dr. Keylan, the District of DisSea entered a peaceful period, during which the first immigrants arrived to mine for Hypercube.

### E.D.G.E.

The Exploration, Defence and Governance Entente (E.D.G.E.) was drawn up by a group of eminent figures of vision, with Dr. Keylan in charge, and then signed in N.F. 25, one after another, by all the other cities that had survived into the Nightfall Era.

### Founding of DisCity

The signing of the E.D.G.E. marked the founding of DisCity, where the world's only Hypercube-mining area was located. In accordance with the entente, DisCity would transport some of the Hypercube it acquired to the other cities, which, in return, would provide DisCity with some of their own resources and other forms of support.

## N.F. 33

### Passing of Keylan

Dr. Keylan died of illness and the whole world mourned his death. The Keylan Square was built in the center of DisCity industrial area and the Statue of Keylan was erected there.

## N.F. 84

### DisSea Explosion

A huge explosion occurred in DisSea, contaminating and ruining the mines there. Hypercube production dropped sharply, leading to the decline of the West District's mining industry.

### BR-000

The first-ever Black Ring, also called the Primary Black Ring, appeared in N.F. 84. The DisSea Explosion and the Black Ring led to the direct death of 87231 people, and a three-month period of heavy contamination, which turned more than 200 thousand people into Maniacs.

### Grace River

The Grace River separated West District from Eastside, limiting the flow of residents from one region to the other, and acting as a buffer against the spread of Mania.

## N.F. 89-99

### BR-001

The Carnival Black Ring BR-001 appeared. Hamel became the first publicly identified Sinner.

### Carnival Black Ring

The carnival went on ahead in DisCity after the BR-000 was contained. On the third day of the festival, Hamel showed up. Later on, it's detected that there was an S-Class Sinner going manic on the premises, followed by the appearance of the BR-001.

### Aftermath

The first secondary Black Ring ever confirmed. Because of this large-scale contamination incident, the FAC's reputation took a hit, and the public's attitude toward Sinners took a turn for the worse.

### The Rust

The Rust was built by the FAC on top of the Grace River, to further separate West District from Eastside. Consequently, the two regions are now completely closed off from each other.

### West District Order Management Regulations

West District Order Management Regulations was passed by the City Council in N.F. 99. In accordance with the regulations, all the governmental agencies moved out of West District, with the exception of the Public Security Bureau. From this point on, West District became a de facto autonomous region, belonging to DisCity in name only.

### Syndicate

West District was soon overrun with violent gangs. On paper, these gangs were subject to the authority of DisCity, but in reality, they were pretty much their own bosses. Slowly but surely, West District, also known as Syndicate, came to be viewed as a land of sins by the citizens of DisCity.

## N.F. 112

### MBCC Riot

On August 12, N.F. 112, a riot broke out in the Minos Bureau of Crisis Control. The new Chief accepted the challenging task of tracking down the mastermind behind this incident, Suspect R.

### Square Black Ring

On August 20, N.F. 112, a Black Ring appeared in Keylan Square. One week later, the MBCC Chief resolved the crisis.

### Carnival Black Ring

On August 28, N.F. 112, the MBCC Chief eradicated the Carnival Black Ring, which had been 23 years in the making.