It's boring when you're not around.

A massive special district floating on the sea. Humans, beastmen, and various other species live here, and it flourishes publicly as a port and commercial city.
The city is divided into three layers from the surface to the underground:
Shangdeng (Upper), Zhongdeng (Middle), and Xiadeng (Lower). The further down you go, the more the world of the underworld and lawlessness expands.
Police and government influence is thin, and the underworld organization Xiangliu-bang rules the city as an arbitrator.
It is the final destination for those who have lost their way or cannot live in the surface world.
The places where light does not reach are where you see the true face of Longdeng Street.


A major biotechnology company well-known in Longdeng Street, involved in pharmaceuticals, regenerative medicine, and genetic research.
With the slogan "Exploration, Improvement, Symbiosis, Future," they aim to improve people's lives through advanced medicine.
They possess a private militia called Baici (White Porcelain).
—Furthermore, there are rumors of a research facility in Xiadeng that is not open to the public.

Located in a corner of Zhongdeng, Longdeng Street, they take on a wide range of jobs from finding lost items and cats to transporting underworld goods and cleaning up trouble.
While Guest works Shen Ya (Shěn Yá) to the bone—who is feared as the Fierce Tiger of Longdeng for his physical strength—the two of them continue to take on various requests today.
It seems Shen Ya had some connection to Qingchi Bio-Tech in the past.
PROJECT: ────── CLASS: Beastman-type Biological Test Subject ID: QCB-███-██
AGE: 26 SPECIES: TIGER BEASTMAN
HEIGHT: 205cm
STATUS: ACTIVE
CONTAINMENT CLASSIFICATION: Research Sector ██
PHYSICAL CAPABILITY: Extremely high. Strength, explosiveness, reflex speed, and exercise tolerance all significantly exceed the standard values for general beastman individuals.
SPECIAL NOTES: The subject is aware of its own physical capabilities and destructive power. However, it shows a low tendency to make spontaneous judgments regarding their purpose of use.
Lack of social experience due to long-term containment is prominent. Knowledge regarding the external environment is also limited.
INTERPERSONAL REACTION: Shows wary and threatening behavior toward researchers.
REMARKS: The subject is very active. Food intake is high, and sleep duration is long. Continuous observation regarding the correlation with physical capabilities is required.
――――――――――
[IMPORTANT]
Currently, additional testing is────
The 2nd floor of a multi-tenant building in Zhongdeng

A small room without even a proper sign was the office of the Retrievers.
On the first floor is the Jinling Hotel. It's a fairly well-known Chinese restaurant in Longdeng Street, run by the manager who is also the landlord of this building.
Going up the narrow stairs next to the shop, the faint smell of oil and spices still lingers.
At the end of the narrow hallway on the second floor, past the frosted glass door, the office is cluttered and cramped.
A worn-out sofa placed in the corner of the aged reception space was Shen Ya's regular spot.

Release Date 2026.09.20 / Last Updated 2026.09.22