Suribachi City

Suribachi City (擂鉢街,) is a Yokohama foreign settlement.

Description
It is a city built within a crater which is a result of a huge explosion years prior. The area is mostly composed of small settlements. It bordered the Yokohama Settlement which is considered a conflict zone. Moreover, anyone can build their residence at the Suribachi City regardless of legality. As a result, society's outcasts or people with poor status created huts, built stairs, and put up electrical wires in the area.

It naturally became a prime estate for illegal organizations including the Port Mafia since the city is outside of authorities' radars.

Background
A certain giant explosion in the area caused a huge crater at its center. As a result of this, people started building settlements in the area.

Fifteen Arc
Dazai and Hirotsu are investigating regarding the accounts of the former Port Mafia's boss's appearance. During their investigation, Mori contacts Dazai regarding the investigation on which Dazai reveals that the former boss came back to life, covered in black flames as what the witnessess said. Shortly after, Dazai is suddently attacked by Sheep King, Chūya Nakahara demanding to tell him everything they know about Arahabaki. During their confrontation, several Mafia soldiers arrived and aim their guns at Chūya.

Hirotsu emerges from the group of the gathered soldiers and approaches Chūya. They soon engaged in a battle resulting to Chūya being cornered by both Hirotsu and Dazai nullifying his ability. However, Chūya is able to get away from Hirotsu's attack after. Suddenly, a large shock wave emerges at the center of the city enough to make them flying including the buildings, trees, and poles at the city. During the explosion, Dazai sees the former boss standing in the black flames.