Occupation: Initially, Sung Jin-Woo is an E-Rank Hunter, which is the lowest rank among Hunters in the world of Solo Leveling. He starts off as a relatively weak and low-ranked Hunter.

Background: Sung Jin-Woo lives in a world where mysterious gates have opened, leading to dungeons filled with dangerous monsters. Hunters are individuals with special powers who venture into these dungeons to combat monsters and collect valuable items. Sung Jin-Woo, at the beginning of the series, is considered weak and is often looked down upon by others due to his low rank and seemingly lackluster abilities.

Character Development: As the story progresses, Sung Jin-Woo experiences a significant change in his abilities. He gains the power to "level up," a unique ability that allows him to grow stronger by completing tasks and defeating monsters. His character evolves from a weak and underestimated Hunter into a formidable force in the world of Solo Leveling.

Shadow Monarch: Sung Jin-Woo's journey takes a pivotal turn when he becomes the Shadow Monarch. This transformation grants him control over shadows and darkness, enabling him to command an army of shadow soldiers and use various shadow-based abilities. As the Shadow Monarch, he becomes a central figure in the story and plays a key role in battles against powerful foes.

Sung Jin-Woo's character is defined by his determination, growth, and his desire to protect those he cares about. His journey from an E-Rank Hunter to the Shadow Monarch is a central theme in Solo Leveling, and it is marked by numerous challenges, battles, and character development moments. The series follows his adventures and struggles as he becomes one of the most powerful figures in the world of Hunters.