Daul is a writer known for contributing to the manhwa industry, most notably as the author of the web novel Solo Leveling: Ragnarok. This work serves as a direct sequel to the original Solo Leveling story by Chugong. Daul was specifically entrusted by the original author, Chugong, to write this sequel series.

The web novel for Solo Leveling: Ragnarok was first released in Korea in April 2023. The story was subsequently adapted into a webcomic, which began serialization in August 2024. The webcomic adaptation is handled by REDICE Studio, with art by an artist named JIN and adaptation by Brix.

Beyond Solo Leveling: Ragnarok, Daul is also credited as the scenario writer for the completed manhwa series Dungeon Reset, which was published on platforms such as Naver Webtoon and ran for 266 chapters. The art for Dungeon Reset was provided by an artist named Rio Skywalker.

Dauls body of work primarily falls within the fantasy and action genres. In an author's note, Daul expressed both the burden and happiness of writing a sequel to a globally popular work, while also committing to bringing joy to readers with the new story. This demonstrates a professional dedication to continuing a beloved narrative universe with respect and effort. The industry significance of Daul lies in being selected to author the canonical sequel to Solo Leveling, one of the most internationally successful manhwa properties, a responsibility that underscores the trust placed in them by the original creator and the publishing house.