6 : The Terrifying City Here

: The Hero Association investigates the area to find the source of the high monster density, unaware that the reason most "disasters" end quickly is simply because Saitama defeats them before they can leave the area. Key Events in Episode 6

: Having recently registered as a professional hero, Saitama realizes he has done nothing "heroic" in five days. If he does not perform a heroic act within a week, he risks being dropped from the Hero Registry. 6 : The Terrifying City

In the series, City Z has a notorious reputation for being a "haunted" or "terrifying" place due to its unusually high frequency of monster sightings and strange occurrences. : The Hero Association investigates the area to