12 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.
The Daebi invokes 종묘사직 — literally the Royal Ancestral Shrine and the altar of the gods of land and grain. In Joseon, this phrase meant the entire dynastic state: its legitimacy, its bloodline, and its continuity. Claiming you alone can protect it is the boldest possible power grab short of sitting on the throne.
Most Korean shamans (무당, mudang) are women; a 박수무당 is a male shaman and historically rarer. The verse he chants — asking a turtle to show its head or be roasted — comes from the ancient Gaya song 구지가 (Gujiga), one of the oldest recorded poems in Korean, used as a summoning incantation.
축시 is the traditional time block from 1 a.m. to 3 a.m., the deepest and most yin-heavy part of the night. Shamanistic rituals like the 여제 (yeoje, a state rite to appease wandering spirits) were deliberately scheduled then because the boundary between the living world and the spirit world was believed to be thinnest.
In Korean cosmology drawn from yin-yang theory, 양기 is the warm, life-sustaining force that living bodies carry. Ghost hunters and shamans in folklore consumed it to stay grounded in the living world; sharing one's 양기 with another person was understood as a genuinely self-sacrificial act, not just medicine.
귀매 (guimae) is a compound of 귀 (ghost/spirit) and 매 (a binding or demon force) — a being more ancient and powerful than ordinary ghosts. Calling one 태초 (primordial, from the beginning of time) places it outside the normal hierarchy of spirits that a shaman or exorcist could simply command, which is why Gucheon must negotiate rather than fight it.
The king directly addresses the spirits of epidemic victims and admits the state failed them — a scene rooted in real Joseon ritual logic. During major outbreaks, the court held 여제 (yeoje) rites in which the monarch took symbolic responsibility for the dead who had no proper burial or mourners, because unmoored souls were thought to cause further disasters.
인과 is the Korean-Buddhist concept of cause and effect: every action plants a seed that must be harvested. The Crown Prince's ghost warns Gucheon that destroying another soul triggers an automatic karmic penalty — becoming a 악귀 (akgwi), an evil spirit — regardless of intention. This is why Gucheon's choice is framed as a true sacrifice, not just a fight.
여제 were official Joseon ceremonies held at city gates and crossroads to pacify the 여귀 (yeogwi), spirits of people who died without proper rites — from epidemics, war, or poverty. The rites were organised by local magistrates across the country, not just at the palace, which is why the report mentions each district wrapping up its own ceremony.
사가 literally means a private house outside the palace walls. Being sent to one's 사가 was a form of political exile within the aristocratic world: the person kept their title but lost access to power. For the Daebi (Queen Dowager) to be moved there — especially after her public breakdown — signals she is being sidelined without the scandal of a formal punishment.
꺼먹살이 (kkeomeogsari) is a folk-supernatural term for a low-level spirit that latches onto a living person rather than a fixed location and slowly drains their vital energy. Unlike place-bound ghosts, it travels with its host — making it both harder to detect and a plot-convenient clue that Gucheon is still somehow alive.
This proverb translates roughly as 'a person is different going into the outhouse than coming out' — meaning someone who begs for help changes their tune the moment the crisis passes. Saengggang is quoting it directly at the king to accuse him of breaking his promise now that the danger is over, which takes considerable nerve when addressing royalty.
Joseon succession was brutal: princes who lost the throne race were frequently executed, exiled, or forced to suicide by the winning faction. Saengggang seeing a palace layered with the resentful souls of failed princes is historically grounded — figures like Sado (사도세자), entombed alive in a rice chest by his own father, became defining symbols of royal tragedy in Korean memory.