동궁
A king hires a ghost-slayer and a ghost-talker to investigate his own palace? Sounds less like a strategic move and more like a desperate attempt to avoid a proper security audit. I'm just saying, if your palace is haunted enough to need a supernatural dream team, maybe invest in some better feng shui or, you know, a competent human guard.
Gu Cheon is an irreverent spirit slayer who can cross between the living world and the Realm of Gwi and cut down hostile spirits. Haunted by guilt surrounding his mother's death, he initially avoids responsibility and resents being forced into royal service. His partnership with Saeng Gang gradually gives him a reason to protect others despite the supernatural cost.
The Queen Consort is King Ju Sang's wife and the senior consort of the reigning royal household. She is caught inside the succession crisis as the king's sons die and competing branches seek control of the throne. The drama gives limited independent detail about her personal ambitions or history.
The Monk is an elderly spiritual practitioner who previously helped the palace during the first outbreak of supernatural deaths. Unable to return himself, he identifies Gu Cheon as the person capable of entering the Realm of Gwi and fighting the renewed curse. His recommendation directly causes Gu Cheon's recruitment.
Royal Concubine Yoon is a member of King Ju Sang's inner royal household. Available cast listings confirm her presence but do not provide enough reliable information to define her family connections, motivation, or independent story arc. She should remain a supporting record pending direct episode review.
Ghost of Thought appears as an English-language credits label associated with the supernatural activity in the series. The corresponding on-screen spirit cannot currently be distinguished reliably from the drama's other unnamed ghosts or gwi-mae. No major plot role, relationships, or episode events should be assigned until the original Korean credits are reviewed.
Musician is an existing minor THREADS record whose exact appearance and narrative function remain unverified. The label may refer to a court performer, an incidental credited role, or translated metadata rather than a distinct recurring character. It should not be assigned major relationships, organizations, arcs, or events without confirmation from the original credits.
Kim Sang Seon is King Ju Sang's trusted chief eunuch and carries out confidential royal instructions throughout the investigation. His loyalty gives the king a dependable attendant who can act discreetly when rival factions threaten the operation. He functions as the king's most reliable operational representative.
ProfessionalJi Yul is a trusted palace companion who cares for Saeng Gang during illness and supernatural danger. She alerts Gu Cheon when Saeng Gang behaves strangely or disappears. Their friendship provides Saeng Gang with practical and emotional support inside the palace.
AllianceThe Monk is the senior spiritual practitioner who recognizes Gu Cheon's ability to enter the Realm of Gwi. When the palace seeks help with the renewed curse, he identifies Gu Cheon as the person capable of confronting it. His recommendation places Gu Cheon inside the royal investigation.
MentorshipKing Ju Sang and the Queen Consort occupy the central royal marriage during the succession crisis. The Queen remains part of the immediate household threatened by the deaths of the princes and the advancement of collateral heirs. The drama provides limited independent development of their emotional relationship.
RomanticChoi Suk Bin is King Ju Sang's mother, making the Queen Consort her daughter-in-law within the royal household. Both women belong to the immediate ruling family threatened by the succession crisis. The supplied material does not provide enough direct interaction to define their personal relationship more precisely.
FamilyRoyal Concubine Yoon belongs to King Ju Sang's inner royal household. Available information confirms her position but does not establish a significant independent emotional bond, political agenda, or connection to the main curse investigation. The relationship is retained as a formal royal-household connection.
FamilyThe Royal Palace is the primary setting and the center of political authority, royal succession, and supernatural unrest. King Ju Sang governs from the complex while competing royal factions, court attendants, shamans, guards, investigators, and spirits struggle over the deaths of the princes. Most of the curse investigation and the final outbreak of possession occur within its grounds.
The East Palace is the royal residence associated with the Crown Prince and the central focus of the apparent curse. The deaths and possessions connected to the succession make its grounds dangerous to both the royal family and the investigators. Gu Cheon and Saeng Gang are assigned to uncover why hostile spirits continue gathering there.
The Realm of Gwi is the spirit world that overlaps or mirrors the world of the living. Gu Cheon enters it to confront ghosts directly, while Saeng Gang can be drawn into it through possession, ritual, or her ability to hear the dead. The final battle against the Crown Prince takes place there and places both investigators' souls at risk.
The East Palace Pond is where the Crown Prince is found dead and where the Favored Court Lady died decades earlier. It appears to be the source of the royal curse and serves as a crossing point through which Gu Cheon enters the Realm of Gwi. Releasing the pond spirit temporarily resolves Prince Yeongan's possession but does not stop the continuing deaths.
The Salt Storehouse contains jars holding the remains of court women who died after being trapped during a fire. Gu Cheon and Saeng Gang release their spirits and uncover evidence linking the old royal deaths to suppressed human crimes. The site connects the Favored Court Lady's persecution, Royal Concubine Han's history, and the succession conspiracy.
The Royal Court Hall is where King Ju Sang receives officials and confronts demands concerning the succession. The Queen Dowager publicly challenges the King's legitimacy there, while Ik Sang's branch gains influence as the King's sons die. Political accusations and royal decisions turn the supernatural crisis into an open struggle over the throne.
Gu Cheon is assigned palace quarters after being forced to investigate the East Palace curse. The room becomes his temporary residence, operational base, and meeting place with Saeng Gang. Ggeomeoksali and other supernatural threats can reach him there despite the apparent security of the palace.
The Queen Dowager's quarters serve as the headquarters of her household and political faction. Lady Jang protects the secrets associated with the old palace scandal there, and spirits connected to the Salt Storehouse gather nearby. Saeng Gang later confronts the Queen Dowager in this setting and forces her to acknowledge her role in the Favored Court Lady's destruction.
Choi Suk Bin's quarters initially appear to be a protected refuge within the royal household. Spiritual wards around the residence conceal resentful ghosts and evidence connected to the earlier succession murders. Choi Suk Bin confesses her crimes there before poisoning Saeng Gang to preserve the conspiracy.
The Crown Prince's body is interred at this royal burial site after his death is presented publicly as suicide. Saeng Gang secretly removes the body so that the investigators can determine how he actually died. Evidence from the corpse helps reveal that King Ju Sang poisoned his son and that the prince returned as the true ak-gwi.
The Plague-Stricken Village is devastated by an illness spreading near the royal center. King Ju Sang orders the inhabitants killed to prevent further infection, creating a community of resentful dead. The Crown Prince later consumes their anger and uses it to intensify possession throughout the palace.
The Royal Guard's abandoned home becomes an investigation site connected to the false accusation against the Favored Court Lady. Gu Cheon confronts the guard's ghost nearby and learns that his confession to an affair was coerced. Evidence buried near the house leads Saeng Gang to the baby shirt used to reach the pond spirit's remaining humanity.
The Royal Hunting Grounds are where Prince Yeongan dies unexpectedly after appearing to recover from the pond spirit's possession. His death in the King's presence proves that the Favored Court Lady was not responsible for the continuing attacks on the royal heirs. The incident redirects Gu Cheon and Saeng Gang toward the Crown Prince as the true supernatural threat.
The unnamed kingdom ruled by King Ju Sang is the story's largest political authority. Its stability depends on the survival of the royal bloodline, making the deaths of successive princes both a supernatural emergency and a succession crisis. Rival royal branches exploit the disaster while the King's hidden decisions create further resentment among the living and the dead.
The Royal Family is the ruling dynasty targeted by the East Palace curse. Rival maternal lines, concealed children, murdered heirs, and competition among collateral branches have fractured the household. Violence committed to control the succession transforms private family crimes into a supernatural threat to the entire kingdom.
The Royal Court governs the kingdom and administers the palace under King Ju Sang. It becomes divided among the King, royal matriarchs, collateral claimants, attendants, guards, and supernatural advisers as the curse destabilizes the succession. Court authority is repeatedly used to conceal evidence, coerce witnesses, conduct investigations, and control access to the royal family.
The Secret Curse Investigation Team is assembled under King Ju Sang's confidential authority to uncover the source of the East Palace haunting. Gu Cheon supplies spirit-slaying abilities, Saeng Gang hears the dead, and trusted palace attendants provide access and logistical support. The temporary alliance repeatedly clashes with royal factions determined to suppress evidence or redirect the investigation.
The Queen Dowager's faction protects her authority, her preferred account of the old palace tragedy, and an alternative path for the succession. It promotes Park Su as a spiritual adviser, suppresses evidence about the Favored Court Lady, and temporarily aligns with Ik Sang's branch. The faction weakens after the Queen Dowager's confession and removal from the palace.
Ik Sang's faction seeks to redirect the succession from King Ju Sang's immediate household toward Ik Sang's branch of the royal family. It exploits the supernatural crisis, uses Park Su as a covert operative, and promotes Prince Inha as a legitimate alternative heir. The conspiracy begins collapsing when Park Su becomes a liability and Ik Sang's involvement comes under investigation.
The Palace Guard protects the royal compound, enforces court orders, and restricts access to sensitive areas. Competing factions use guards to seize suspects, silence investigators, and carry out coercive royal commands. The organization represents the physical authority of the palace alongside the supernatural conflict.
Gu Cheon belongs to a Buddhist-linked spiritual lineage capable of confronting hostile spirits and entering the Realm of Gwi. The Monk serves as the senior practitioner who recognizes Gu Cheon's unusual abilities and directs the palace toward him. The lineage's methods emphasize spirit confrontation, ritual preparation, and maintaining a tether to the living world.
