N-City

N-City (J市 N Shi) is a large city within the world of One-Punch Man.

Heroes

 * Feather

Civilians

 * Erika

Plot
Feather is fighting the gang "Iron Fist" to rescue Erika from them. As he's about to go all out, the fight is interrupted by Saitama and Tatsumaki, who quickly take care of the criminals and fly off to continue their own squabble.