South Kanto Reform School

South Kanto Reform School is a juvenile correctional facility located in South Kanto.

Black Dragon Arc
Once he is released from South Kanto Reform School, Seishu Inui realizes that the Ninth Generation Black Dragon have disbanded while he was in the detention center. On the day of his release, he is picked up from the facility by Hajime Kokonoi who playfully teases him about leaving the reform school in his gang uniform.

As they both walk away, they talk about the Ninth Generation's loss in a battle against the Tokyo Manji Gang, which was the cause of its disbandment. Filled with determination, Inupi promises to revive the Black Dragon despite Koko's sermons about telling him to give up. With no plan in mind, Koko helps Inupi find a successor by recommending a known fighter at his middle school Taiju Shiba, and they set off to meet him.

After being abducted by Yasuhiro Muto and failing to protect Koko from joining the Yokohama gang Tenjiku out of force, Inupi and Takemichi Hanagaki settle in his and Koko's hideout for the night. As they heal themselves from their battle wounds, Inupi chronicles his life history with the Black Dragon: after joining the Eighth Generation Black Dragon, he landed himself in the South Kanto Reform School due to the many crimes he committed under the dictatorship of Izana Kurokawa.