Solo Leveling Novel Volume 5 was written by Chugong.

Jinwoo’s received some amazing gifts from the system, but the latest one might prove to be the greatest one yet-a key to the double dungeon where it all started. Perhaps a second visit might provide him with answers for once. He’s got some time to kill until he can use the item though, but before he can tackle another gate, unexpected movement from the shadow soldiers guarding Jinah sets his alarm bells ringing...

Solo Leveling Novel Volume 6 was written by Chugong.

Jinwoo has discovered the true nature of his powers and seen with his own eyes what he could accomplish with them. But with S-rank dungeon break in Japan and the exponential increase of gate activity all over the world, he’s going to have to figure out how to control them—fast.

Solo Leveling Novel Volume 7 was written by Chugong.

With the battle between the Monarchs and the Rulers quickly approaching, Jinwoo must rally the international community against this oncoming threat! Though he wields unimaginable power, he’s acutely aware that he can’t fight them all on his own...but will the other hunters stand with him?

Solo Leveling Novel Volume 8 was written by Chugong.

It’s the final battle between the Rulers and Monarchs, and the remaining hunters rally against the armies of the Dragon King. But even if he wins, how will they ever recover from the tremendous loss? The fate of humanity rests in Jinwoo’s hands...