Character from Solo Leveling by Chugong
Jinwoo's father — a hunter who disappeared into a Gate ten years ago and was presumed dead, but survived as an S-Rank empowered by the Rulers.
Sung Il-Hwan vanished into a Gate a decade before the story begins, leaving behind a wife with Eternal Sleep disease and two children struggling to survive. Everyone assumed he was dead. He wasn't. He was trapped in a dungeon, kept alive and empowered by the Rulers — the cosmic beings opposing the Monarchs — to serve as one of their vessels on Earth. When he finally returned, he was S-Rank and barely recognized his own son, who had grown from a scared boy into the Shadow Monarch.
Also known as: Sung Il-Hwan, Il-Hwan, Jinwoo's Father