Solo Leveling. Book 2

LEVELING UP! Sung Jin-Woo, once dubbed the weakest E-rank hunter, has changed. With the help of a mysterious System, he rapidly gains strength and abilities. Now he can solo clear dungeons that once seemed deadly. The largest guild and new enemies have taken an interest in him. Jin-Woo only wanted to earn money and unlock his potential... But it seems the System has completely different plans for him…