after a battle with an old enemy, a former hero gives up his humanity and takes up a position as the king of demons, but he soon realizes he may have bitten off more than he could chew. However, his life is cut short soon after the birth of his son... After the death of his father, Kazuhiko is forced to find his own path, this path turned out to be the one that led to him becoming the Emperor of Existence.
11 parts