The agency of workers tasked to clean up a small group of leftover wild monsters after every large monster attack around the city, a risky job for sure, but it is also the same for the paycheck.

A large number of the cleaners are either prisoners of lesser crime trying to lessen their sentence, or self-taught orphans with no proper education

"If you're wondering why the military doesn't deal with them, in summary, they don't want to waste their expensive ammunition on a leftover monster, and the police don't have the right equipment to deal with these monsters, so we're only left with the cleaner."
-Logistic Employee of the Cleaner-