Understanding the Jeju Arc: A Deep Dive into the Dugoi Island Saga in Solo Leveling
The Jeju Arc, also known as the Dugoi Island arc, is a big part of the webtoon Solo Leveling by Chugong and illustrated by DUBU. This arc is important for character development and a major plot twist, we will see the true nature of the threats Hunters face and Sung Jin-Woo’s growth.
The Importance of Dugoi Island
Dugoi Island is introduced as a very dangerous place where the true power of monsters are shown. Before this arc, the series only hinted at the existence of scary monsters, Kamish was the most notable one. Kamish is a dragon like creature, so powerful he nearly destroyed the West Coast of America and his remains is a site of interest for the FBI Hunters. The arc will raise the stakes, introducing the Ant King, a strong and cunning enemy that will be a challenge to the Hunters.
Sung Jin-Woo has just returned from the Demon Castle where he beat the Ram, a strong enemy. His growth there is important because he was invited to a raid on one of Korea’s first Class S Gates. But he declined the invitation thinking it’s not worth his involvement. This sets the stage for the drama in Dugoi Island.
Foreshadowing and Build-Up
The events leading up to Dugoi Island are foreshadowed throughout the previous chapters of Solo Leveling. Choi Jung-In and Baek Yun-Ho talks about the Class S Gate and hints the dangers that are coming. The effects of the island are also felt in Japan and the Japanese Hunters are mobilizing to counter the Ants.

This arc is a big deal in the series because it’s the first time we see international collaboration between Hunters. The Japanese S-Class Hunters under Goto Ryuji come up with a plan to take down the Ants. Their goal is to lure the main Ant forces away from the Korean Hunters who will be going after the Chief Ant Queen and her guards. This is unprecedented in the series and shows how the Ants are being recognized as a threat.
The Battle Unfolds: Strategy and Sacrifice
As the battle in Dugoi Island begins, the initial part of the plan seems to be working. The Japanese Hunters take on the bulk of the Ants, engaging them while the Korean Hunters move towards the Queen’s nest. The teamwork between the Hunters from both countries is impressive, showing off their skills and strategies.
But when the Ant Queen sees she’s about to lose, she calls for backup. This brings in the Ant King, a terrifying and powerful being that overwhelms the Korean Hunters. The Ant King’s arrival is a game changer, he’s stronger and more vicious than before.
Even with the S-Class Healer Min Byung-Gyu’s valiant effort to protect his comrades, the situation gets uglier. His death is one of the saddest moments in the arc and shows the cost of battle. Goto Ryuji sees his comrades are in trouble and can’t contact them so he brave’s it and goes to look for them. Unfortunately he too falls to the Ant King, making the situation even more dire for the Hunters.
The Climax: Sung Jin-Woo's Ascendancy
As the fight reaches its peak the Ant King comes back to the nest where he finds Sung Jin-Woo. This is the key part as it shows Jin-Woo’s growth and the full extent of his powers. After going through countless fights and experiences Jin-Woo is no longer just another S-Class Hunter, he’s a force to be reckoned with.

The fight between Jin-Woo and the Ant King is one of the most epic in Solo Leveling. Using his Shadow Army which has gotten stronger and bigger Jin-Woo engages the Ant King in a fierce battle. The fight is intense with both parties showing off their skills. Jin-Woo’s strategy with his Shadow Army allows him to outmaneuver and win against the Ant King, showing his growth as a character.
And then Jin-Woo kills the Ant King and brings him back to life and adds him to his Shadow Army. This is not only a testament to Jin-Woo’s power but also a change in the balance of power between Hunters and monsters. The Ant King, once a powerful monster, is now a part of Jin-Woo’s growing army and solidifies his position as one of the strongest Hunters in the world.
The Aftermath: Implications for the Future
The Dugoi Island arc is a pivot in Solo Leveling. Monsters are getting stronger and the dynamics between Hunters are changing. Korean and Japanese Hunters working together, the casualties suffered and Jin-Woo’s rise to power, all of this is the arc.
The aftermath of Dugoi Island has big implications. The Japanese Hunters saw Jin-Woo and his Shadow Army in action and are rethinking their strategies and alliances. This arc sets up future conflicts as the balance of power among Hunters starts to shift and Jin-Woo becomes the central figure in the monster hunt.
In short, the Jeju Arc isn’t just about fighting strong enemies; it’s about growth, sacrifice and the never ending pursuit of power in face of overwhelming odds. The events on Dugoi Island is a catalyst for character development, plot progression and the exploration of themes like teamwork, sacrifice and power. As the series goes on, the effects of this arc will be felt throughout the story, and the challenges and conflicts Jin-Woo and his friends will face in their survival and dominance in a world full of danger.