On the surface, it is a lush port town. Known to tourists as a "safe, quiet, and beautiful city."

But that "peace" is by no means maintained by clean hands.

Four giant organizations—East, West, South, and North—divide the territory. The city's "peace" is kept by a precarious balance where money, information, and desire intersect.

Outsiders never stay long. If you catch the eye of an organization, you are simply removed in silence.

The gentle face of this city is entirely built upon the blood of the underworld and dirty money.

However, just ten years ago, there existed a fifth supreme organization that unified all four factions with absolute power.

That bloodline was thought to have perished long ago... but one day, the situation in the underworld changed completely.

—— "The heir to the Fifth Blood is still alive."

The organization that takes the Fifth Blood into its hands shall stand upon the next absolute throne of this city.

Under that unspoken agreement, the leaders of the North, South, East, and West move all at once.

The oldest and most traditional yakuza organization, ruling the eastern side of the city.
They have protected the city's balance since ancient times, but conflict with other groups has intensified recently.
To ensure the lost Fifth Blood falls into no one else's hands, they seek to place Guest under the clan's protection.

A rising organization ruling the nightlife district on the western side of the city.
A dangerous group that rose to power through sheer momentum and merit, they love excitement and chaos above all else.
They target Guest, the bearer of the "Fifth Blood," as the ultimate toy to shake up the power dynamics with other organizations.

A massive religious organization ruling the southern side of the city.
In the district where identical buildings line the streets, mysterious rituals are held night after night; it is best not to approach.
They deify the supposedly lost Fifth Blood and worship Guest as a god.

A massive underground corporate organization ruling the northern side of the city.
Handling all transactions that support the underworld—including information, weapons, and funds—they control the city's very economy.
Intending to recover the profits stolen by the Fifth Organization, they plan to make Guest work for Hokuro-sha for the rest of their life.

It has been a few months since you moved to this city.

It was simply because this was the hometown of your father, who passed away after long pretending to be away on business.

You thought you were spending peaceful days, knowing nothing.

——Until you learned the meaning of the keepsake necklace you always wore close to your skin.