This is a fine series. The main character isn't almighty nor is he a justice-freak. You could even consider him a swindler. A swindler of the rich and his fellow Witch Hunters, that is. Money is his second priority, just after hunting down a certain witch. Unlike what has been mentioned before, the main character isn't an orphan because he still has a mother. And naturally he has a rival in the form of an earlier student of his teacher. It's "shounen" after all.
What's really intriguing isn't his background, because that's all pretty much explained. What keeps me reading is finding out the extent of his powers as well as the purposes of the witches following his actions, combined with the shocking revelation of what his supporter possibly is. The manhwa isn't too complicated, seeing as it IS a Shounen type and not a Seinen.
He isn't a super character by any means. To date, he's technically lost 4 out of 6 battles, and nearly died an even greater amount of times, usually saved by a certain witch or his faithful supporter. I think the author purposely gave him glaring faults as a compromise for his overall strength in comparison to his peers (A Desert Eagle >.> 😉 . Sometimes these faults are exaggerated and then forgotten later (Such as his greed).
Overall, this is a good manhwa. While I wouldn't say it's a must-read, I would recommend it, mostly to other people like me who can read the RAWs. Meep works a bit slow on this, with 11 chapters released in a few years, when there are over 7 volumes out.