13 timestamped notes explaining the Korean cultural context in this episode — customs, idioms, food, honorifics, and history, at the moment each appears on screen. These notes discuss events across the whole episode. To see them revealed scene-by-scene as you watch, use the episode page to find an airing.
독살 (doksal) means death by poison, a recurring fear in the Joseon court where food and drink passed through many hands before reaching royalty. The Crown Prince's claim that his father poisoned him points to a king who would rather commit murder than let a secret escape — a theme that recurs throughout Joseon historical dramas.
The on-screen caption glosses 진살 as 'kill every single one.' Issuing such an order against civilians — including women and children — to contain a plague would have been considered a grave violation of Confucian governance, which expected a king to be a shepherd of the people, not their executioner. The drama uses it to signal the king has completely crossed a moral line.
액막이 (aengmagi) are objects, rituals, or symbols used in Korean folk belief to block bad luck or evil spirits from entering a space. Hanging them at doorways or in sleeping quarters was common practice, and shamans (무당, mudang) were often called to install them. Here the exorcist is negotiating access to the king's most private space — his bedchamber — under the guise of protection.
In Joseon-era forensic belief (and in some shamanistic practice), rice or grain placed in a corpse's mouth that turned black was read as a sign of poisoning. This ritual placement of rice — called 반함 (banham) — was part of the formal preparation of a body after death. The discoloration here is treated as physical proof, not superstition.
Koreans follow the twelve-animal lunar zodiac cycle, and a person's 띠 (tti) — the animal of their birth year — is considered part of their spiritual identity. Writing a person's zodiac character (묘, 卯, the rabbit) on a charm and inverting it is a way of blocking that person's spirit from crossing a threshold, turning their own sign against them.
A Korean shaman (무당, mudang) is believed to be inhabited by a 몸주신 (momjusin), a personal guardian deity that grants the ability to communicate with spirits. Losing that deity — as happens here — is described as equivalent to dying, because the shaman's power and identity are entirely bound up in that spiritual relationship.
빙의 (bingui) is the Korean concept of a spirit forcibly taking over a living person's body. Unlike Western demonic possession, Korean folk belief frames it as a ghost using a human body as a temporary vessel, often because the ghost has urgent unfinished business. The Crown Prince's ghost is doing exactly this — borrowing the princess's body to hide his own corpse.
옹주 (ongju) is the title for a princess born of a king and a royal concubine (as opposed to 공주, a princess born of the queen). Historically, an ongju held a lower rank and was more vulnerable to political currents — easily expelled from the palace on a pretext. The princess's reference to being sent away as a child without cause reflects how precarious her position always was.
The 내의원 (Naeuiwon) was the official royal medical office staffed by royal physicians (어의, eoui) who attended the king, queens, and princes. Because they had direct access to the royal family's food and medicine, they were witnesses to — and sometimes instruments of — palace poisonings. A physician who examined dead princes and then died of identical symptoms is a crucial loose thread.
In Korean symbolism the dragon (용) represents the king and royal bloodline, while a snake (뱀) can symbolise a cunning, lower-status schemer. The ghost's riddle — 'a snake's shed skin killed the dragon's offspring' — is a folk-style coded accusation: someone who merely appeared powerful (a shed skin, an impostor) destroyed the true royal children.
저하 (jeoha) is the formal honorific address for the Crown Prince (세자), equivalent to 'Your Highness.' It sits just below 전하 (jeonha), used for the reigning king. Shouting it while running signals the palace hierarchy even in a moment of crisis — rank-appropriate language was so deeply ingrained that characters use it even when panicked.
제웅 (jeung) is a straw figure made in the rough shape of a person, used in Korean shamanistic practice to absorb misfortune or evil directed at someone. It functions as a substitute target — bad luck or a curse hits the effigy instead of the real person. Traditionally a 제웅 was tossed into the road on the first full moon of the new year so passers-by would kick it away, carrying the bad fortune with them.
업보 (eobbo) is the Korean-Buddhist concept of karma — the consequences of past actions returning to affect oneself or one's descendants. It carries a heavier fatalistic weight than Western uses of 'karma'; a parent's 업보 is genuinely believed to fall on children. The mother's anguish here is not just guilt but the culturally specific horror that her wrongdoing is the direct cause of her daughter's suffering.