The Setting is in the Double Dragon universe
In the Double Dragon setting, a nuclear war resulted in the The Apunkalypse. There are hints though that Kunio-kun and Double Dragon share timeline; except there is no Nuclear War in the Kunio-verse. River City Ransom Underground is a rare exception.- While River City always had a gang problem, Merv taking control and assuming a Police State did keep things in relative order with some of the trappings of civilization intact. (Like High School)
