Dungeon Fighter Online

Dungeon Fighter Online was first published in Korea in 2008. The novel tells the story of the protagonist, Agent Lee, who entered a mysterious underground city on a mission and fought fiercely with various monsters and evil forces. In the underground city, Agent Lee not only had to fight monsters but also had to face the conspiracy and threats of evil forces. In the end, he successfully completed the mission and protected the peace and security of the underground city. The novel was very popular among readers and was translated into many languages, which was very popular around the world.