Absolute Necromancer

The Tower—an enigmatic domain characterized by constant, volatile shifts. Ten years after betrayal led to his demise, Cha Jinhyuk reincarnates into the body of a young boy living on Earth in South Korea. Once the ultimate necromancer who ascended to the pinnacle of power and unlocked the transcendent Spirit Master class, Jinhyuk now returns as the "All-Master." Armed with absolute mastery over his skills, he begins his ruthless ascent back up the Tower to exact bloody vengeance on the traitor who backstabbed him and the shadowy powers pulling the strings above them.