Seonghwangui Sonjaneun Necromancer

The main character dies from an accidental electric shock during a virtual game test. He wakes up in the body of a young prince, Allen Alfalls, the grandson of a successful man with the same abilities as the job he chose in the game he was playing, the Necromancer!

However, things are not what they seem, including his own necromancy skills. Especially since in this world, being a necromancer is treason.

(Source: Naver, edited)