C-City

C-City (C市, C Shi) is a large city within the world of OnePunch-Man. It consists of a super stadium that holds the martial arts tournaments.

C-City Super Stadium
A public stadium for competitions like the Super Fight Tournament.

Martial Arts Tournament Arc
Saitama enters the tournament disguised as Charanko to learn more about martial arts. Fellow heroes Lightning Max and Sneck also join the tournament. Lightning Max defeats Lin Lin in the first round but is defeated by Suiryu in the second round. Sneck defeats Benpatsu. Saitama defeats the arrogant Zanko and the savage Bakuzan.