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.
세자 (sejа, 世子) is the Crown Prince — the king's designated heir. In Joseon's strictly hierarchical royal court, the death of a 세자 was a dynastic crisis, since it threatened the continuity of the royal line and could trigger bitter factional warfare over who would replace him.
예장 (yejang, 禮葬) refers to a formal state funeral conducted according to strict Confucian ritual protocol. Ordering the procedure immediately — before grief can even be expressed aloud — shows the king prioritising the stability of the court over any personal sorrow, which was expected of a Joseon ruler.
성리학 (Seongnihak) — Neo-Confucianism — was the official philosophical and political foundation of the Joseon dynasty. Its rational, hierarchical worldview had little room for ghosts or shamanic spirits, so a king publicly dismissing talk of ghosts is not just personal opinion; it is a statement about legitimate royal authority.
The king says his third 세자 'left of his own accord' (스스로 떠난 것) — a careful euphemism for suicide. In the Confucian court, taking one's own life was a profound moral failure as well as a political embarrassment, so royal deaths by suicide were almost never spoken of plainly; softer phrases were used to preserve the dynasty's honour.
무당 (mudang) are female shamanic ritual specialists who mediate between the human and spirit worlds. Although Neo-Confucian officialdom officially condemned shamanism, ordinary people — and desperate royals — quietly turned to mudang for healing, exorcism, and divination. Hiring one secretly shows how far the king is willing to go outside orthodox channels.
The backstory — a shaman mother drowning herself and her unborn child, the child surviving alone — follows a well-known pattern in Korean folk belief where a person who crosses the boundary between life and death gains the ability to perceive spirits. The idea is that 구천 (Gucheon) now exists between two worlds, making him uniquely able to see and deal with ghosts.
땡중 is a mildly insulting folk term for a Buddhist monk who neglects his vows — someone living off the temple without genuine practice. Gucheon throws it at the monk as a joke, but the monk reacts sharply because it carries real social stigma. The banter also signals that Gucheon is an irreverent outsider even within the religious community sheltering him.
풍수 (pungsu) is the Korean form of feng shui — reading the energy of land, buildings, and water to advise on placement and fortune. Bringing a 풍수사 into the palace is a respectable-sounding pretext; a king could plausibly consult one about the palace grounds without arousing the suspicion that would follow hiring a shaman outright.
감찰 궁녀 were court ladies with a specific investigative role — monitoring other palace personnel for rule violations and reporting directly to senior authority. Assigning one to watch Gucheon is the king's way of keeping him under control while maintaining deniability; she is essentially his spy inside the operation.
Gucheon draws a distinction central to Korean folk belief: a 귀매 (gwimae) is not a human soul but a mass of malevolent energy formed from accumulated dark feelings in a place — more like a haunted atmosphere than a ghost. An 원귀 (wongwi) is the spirit of a person who died with deep resentment and cannot pass on until that resentment is resolved. The distinction matters because each requires a completely different response.
In Korean and broader East Asian folk practice, branches from a peach tree — especially one growing to the east — are believed to repel evil spirits and negative energy. East is the direction of the rising sun and yang (positive) energy, so an eastward-growing branch carries extra protective power. Gucheon's request is rooted in genuine ritual logic, which makes his comically using it as a back-scratcher all the funnier.
Gucheon explains that smearing his own blood on the peach branch and submerging himself in water is how he enters 귀의 세계, the realm of spirits. This draws on the shamanic idea that blood is a boundary-crossing substance and that water — especially a pond linked to death — serves as a threshold between the living world and the spirit world.
The phrase Gucheon recites is a ritual formula in literary Sino-Korean (한문, hanmun), the formal written language of Joseon scholarship and ceremony. Shamanic and Buddhist exorcism rites often borrowed the prestige of classical Chinese phrasing to give their words additional spiritual weight. The audience hears it as clearly sacred speech, signalling that what Gucheon is doing is deadly serious despite his usually comic attitude.