A resident of Akagicho, high-schooler Yamato finds himself locked up after starting a fight. His classmate, Teru, appears and makes him a deal. In exchange for getting him out of jail, he wants Yamato to take on a job for him. Yamato and his rival, Ryugo, head for the designated spot, but are set upon by thugs Teru riled up. When the two teens win the brawl, Teru takes them underground, where the boys are in for the shock of their lives.
I have a task in need of someone 
with your fighting prowess.
Ich habe eine Aufgabe für
einen starken Kämpfer wie dich.
Tengo un trabajo
para un genio de las peleas como tú.
J’ai besoin de quelqu’un
qui se bat aussi bien que toi.
Ho un incarico che richiede qualcuno
con le tue capacità di combattimento.