Infinite running loop

Based on the game background of the Apocalypse world, the Mutant race Moonlight City.
In order to have the strength to fight against the Mazoku, the Mutant race built a third-level main city with strong DEF capabilities in this area, Moonlight City.
The Demon-Suppressing Tower is a prison built by the Mutant race in Moonlight City in order to suppress the powerful Mazoku beasts. It holds countless Mazoku war beasts and has a history of several decades.
The city lord Kalu then said with...