In Solo Leveling, Sung II-Hwan is a powerful S-Rank Hunter and Sung Jin-Woo's father. Sung II-Hwan was trapped in a dungeon for ten years and was saved by the Rulers. The S-Rank Hunter refused to kill the Shadow Monarch upon his return from the dungeon.

Jinwoo takes a week off to revisit the Demon Castle to continue the search for the ingredients for the Elixir of Life. A Hunter emerges from a Gate.

So how did Jinwoo get to this point? Funny story, he was able to achieve this by taking down the Blood-Red Commander Igris, an antagonist who would fit right into a From Software game. Along with receiving an upgrade in his skills,

A new character was introduced in the episode. He was wearing worn-out clothes and unkempt hair. His appearance made it clear that he had ended up on the wrong side of the world. After being arrested by hunters on the suspicion of being a magical beast, the mysterious man had to wait until Hwang Dong-soo arrived.

After a ten-year absence, Sung Il Hwan, Jinwoo's father, returns in episode 3 of Season 2. What does this mean for the narrative of Solo Leveling?

In the anime, Jinwoo returned with the System, a software that only he could see, which was leveling him up in every way after he had been mercilessly destroyed by monsters in a high-ranking dungeon.