City ​​Of Two Days

A low-level cowboy accidentally entered the City of Two Suns. When he woke up again in the real world, various mysterious forces began to rob him. He was stunned with nerve gas and put into a container and sank to the bottom of the sea. However, he was found naked in the lake. The United States captured him and replaced his body with their Prometheus. Through some strange combination of circumstances, he inherited the memories and abilities of Prometheus. From then on, he also shouldered the mission of repairing the City of Two Suns.