I found this novel to be interesting, though its not my usual taste. MC is blessed with a illegal but rare class.
The difference between this novel and many orher necromancer novels is its much more technical. He isnt just raising his hands and summoning am army. He has to prepare the bodies to raise them his summons are affectef by mana. There is a limit.
Frankly in book 1 the MC cant fight his way out of a paper bag. Well he is fighting the equivalent of bottom tier rift monsters.
However there is a pathway you see develop to great power, but the MC is taking the stairs and not the elevator. I would look forward to seeing his growth in book 2.