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.
If I hadn't come, you would have 
been in there another day, you know?
Ohne mich wärst du
noch einen Tag dringeblieben.
De no ser por mí,
habrías pasado un día más ahí, ¿eh?
Sans moi, tu aurais moisi
encore un jour, tu sais ?
Se non fossi venuto io, non ti avrebbero
fatto uscire ancora per un altro giorno, sai?