|Not Part of Riordanverse|
Seo-Hyeon was tasked with others, including Cadet Jun, to retrieve the Dragon Pearl from the Fourth Colony by Captain Hwan. However the ghosts on the planet sabotaged there ship and it crashes on the surface, none of them survive and they became ghosts.
Hwan would say the group deserted.
After Jun leads his sister, Haneul, and Sujin to the crash sight, the ghosts explain what happened to them and the living realize they are being used as bait to lure the captain to the crash sight. When Sujin alerts them they told Hwan to stay away the ghosts go at them.
After the four living send the ghosts of the Fourth Colony to the afterlife, she and the ghosts of the first mission to retrieve the dragon pearl, minus, Jun, attack Captain Hwan and drag him into the forest.
|Thousand Worlds series|
|Book:||Dragon Pearl | Tiger Honor|
|Main Characters:||Kim Min | Bae Jang | Haneul | Sujin | Juhwang Hwan | Kim Jun | Juhwang Sebin | Sena|
|Secondary Characters:||Areum | Bora | Captain Hye | Lieutenant Hyosu | Lieutenant Ju-Won | Manshik | Nari | Security Officer Seok | Kim Seonmi|
|Minor Characters:||Byung-Ho | Chul | Eui | Eunhee | Gyeong-Ja | Hae | Lieutenant Commander Ju-Eun | Lieutenant Seo-Hyeon | Woo-Jin | Yong|
|Supernatural Species:||Fox Spirit | Dragon | Tiger Spirit | Dokkaebi | Shaman | Ghost|
|Related Content:||Yoon Ha Lee | Rick Riordan Presents|