Cheonsangui Juin

It is a world where people dream of escaping the barren wasteland on Earth and ascending into the abundant sky. 500 years ago, a cataclysm caused the sky to collapse and split into nine cloud layers. It is said that "He who overcomes the nine stratus clouds and ascends to heaven, will become the master of the world." Zeke, who hated the harsh world on land, dreamed of ascending to heaven to change his fate… Finally, on the day when the "Heaven's Gate" leading to the nine stratus clouds opens, he acquires a special new "Soul Bird" that opens the long-desired path to heaven. The adventure into the sky begins. (Source: Naver, translated)