When I saw the cover, I thought this was a Female Lead Story of becoming a Necromancer King. I thought that the King was just a Translation Error. Turns out this was a Classic Japanese Style RPG with Final Fantasylike Class System. The story started off slow, I was expecting a cliche arrogant OP MC with Necromancy Skill but he turned out to be a good classic MC in this genre, I'm guessing he'll be using his Sage Powers for Resurrection instead of Necromancy but I could be wrong. If you like reading JRPG Style Story, then you'll probably love this Manga.
White Necromancer ~Road To Necromancer King~