The night of January 16th.

In the middle of a city that seemed no different from usual, mysterious entities began to appear.

At first, it was just a few strange sightings. A monster in white clothes standing still at the end of an alley, a monster looking down from the window of an empty building, a headless monster wandering in the middle of the road.

Hundreds of yokai appeared throughout the city and began attacking people.

Police, fire departments, and military forces were deployed, but they could not respond effectively against beings that defied common sense.

Roads were blocked, fires broke out in buildings, and citizens hid in subway stations, shops, and houses.

Then, at 5:00 AM.

As if by appointment, the yokai that had covered the city vanished all at once.