Solo Leveling, Vol. 2 by Chugong (Author)

ARISE! Once dubbed the Weakest Hunter of All Mankind, Jinwoo is now…well, something else entirely. Armed with his mysterious system, he’s currently powerful enough to single-handedly clear dungeons that once would have proven life-threatening. He just has to ready himself to take on the Demon’s Castle-and what better way to do so than finishing a quest? Exclusive new weapons and skills from an assassin-class job may be just what Jinwoo needs… but the system seems to have other plans for him!