11 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.
A 도깨비 (dokkaebi) is a creature from Korean folklore born when a human object soaked in blood or sweat accumulates enough spiritual energy. Unlike Western goblins, dokkaebi are not always evil — they can be mischievous, powerful, and even noble. The drama uses this tradition as its central premise: a blood-soaked sword becomes the origin of an immortal dokkaebi.
삼신 (Samshin) is the traditional Korean deity of birth, fate, and child-rearing. Grandmotherly in appearance, she presides over who is born, when, and under what destiny. She is one of the most commonly invoked spirits in folk belief, which is why she appears here narrating a story about fate and cursed immortality.
The battle scenes are set in the Goryeo dynasty (918–1392 CE), a kingdom famous for fierce military culture and intense power struggles between generals and the royal court. The king's jealousy of a victorious general was a very real danger of the era — brilliant commanders were frequently accused of treason to neutralize their influence.
In Goryeo-era Korea, leaving a convicted traitor's corpse unburied and exposed to animals was an official humiliation. Proper burial rites were considered essential for a peaceful afterlife, so denying them was the ultimate post-death punishment — erasing a person's dignity even beyond death.
저승사자 (Jeosung Saja) literally means 'messenger of the underworld.' In Korean folk belief, they are civil-servant-like figures who escort the souls of the dead to the afterlife, keeping precise records of names, birthdates, and cause of death. The drama leans into that bureaucratic image: the Reaper here checks paperwork before offering a farewell tea.
The tea the Reaper offers is meant to erase the deceased's memories of the living world before they move on — a concept shared across several East Asian afterlife traditions. Refusing it means the soul keeps its earthly attachments, which the Reaper warns will lead to suffering. It's a small but loaded moment about letting go.
Traditional Korean birthdays are celebrated with 떡 (tteok), rice cakes in various shapes and flavours — 꿀떡 (honey rice cake) or 무지개떡 (rainbow layered rice cake) are popular choices. Younger generations increasingly prefer a Western-style cake with candles to make a wish. Young Eun-tak's request to switch to cake is a very recognisable generational negotiation in modern Korean families.
In Korean folk tradition, some people are born with the ability to see spirits (귀신, gwisin). This gift is treated as both a burden and a sign of a special fate. The drama uses this belief literally: Eun-tak's ability to see her dead mother is the same ability that marks her as the dokkaebi's destined bride.
The saying '머리 검은 짐승은 거두는 게 아니다' (you should never take in a black-haired beast) is a well-known Korean proverb warning against helping ungrateful people — 'black-haired' distinguishes humans from animals. Using it against a child in your care is a pointed insult, framing Eun-tak as a burden rather than family.
손 없는 날 literally means 'a day without hands' — days in the lunar calendar when evil spirits (손) are believed to be absent and therefore cannot interfere with major life events. Moving house on one of these days is still very popular in Korea, and removal companies charge premium rates on them. The Grim Reaper scheduling his move-in date this way is a deadpan joke about Korean superstition.
도깨비 신부 (dokkaebi sinbu) means 'goblin's bride.' According to the drama's mythology, only this one destined person can pull the sword from the goblin's chest and release him from immortality. Eun-tak's announcement that she is that bride — cheerfully delivered to a stranger in the rain — is both comedic and the engine of the entire story.