Strongest Elementalist: Runic System Descent SE:RSD

As the chosen bearer of the Elementalist system, Ruvian dedicated his life to the path of a knight, guided by the Alliance. However, when he lost his life during the war, the Alliance decided to bury his heroic history. Peace was restored under a white lie.

A demonic warlock then managed to reanimate Ruvian, merging its soul with the soulless body. However, Ruvian's heart remained true. He thrived to see the world after the war and to find out about his diminishing power.

Until he met a troublesome white-haired girl who constantly gave him headaches...