Not terrible but an actual, literal, Chinese Knockoff of Solo-leveling. Read the superior korean work if you only have one choice with your limited time.
The pacing/writing is the worst part. From poor inexperienced nobody to smartly dressed aloof man of the world in one fucking haircut.
....mia is fuckin extra creepy. Triple word score creepy now we know her age and looks don't line up and she got "kids". Her eyes keep looking dead inside.