8 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.
In Korea, medicine (의대, 의대생 = medical school / med student) sits at the very top of the university pecking order. Getting in requires near-perfect exam scores, so friends treat it as a near-sacred achievement — which is why Ganghwa's buddy scolds him for even thinking about romance instead of studying.
The song Ganghwa sings — roughly 'I love you more than you love me / I'll make you laugh forever / if we live together' — is a popular Korean love ballad. Singing it publicly in front of a crowd is a dramatic, old-fashioned romantic gesture that many Koreans would recognise from TV dramas and variety shows.
학원 (hagwon) are private after-school academies. It is completely normal in Korea for children — even toddlers — to be enrolled in art, English, and ballet academies back-to-back. The other mums' criticism is that running a five-year-old through a full daily circuit of academies is excessive, even by Korean standards.
Korean teaching hospitals have a strict rank system: interns → residents → fellows → professors (교수). A department professor like Professor Jang has near-total authority over junior doctors' assignments. Being told to join the surgical team is not a suggestion — refusing it is career-ending insubordination.
Several of the ghosts reveal they died by suicide and bond over it casually, which is played for dark comedy. The drama uses this to show that the ghost community is a cross-section of people who died in different circumstances — but the relaxed tone among the ghosts contrasts sharply with the tragedy of the living characters.
제사 (jesa) is a Confucian-rooted ceremony held on the anniversary of a family member's death. The family sets out the deceased's favourite foods, bows, and burns incense before the spirit tablet bearing the person's name. For Yuri's ghost, it is both a chance to 'taste' the offerings spiritually and a painfully bittersweet reminder of her death.
지박령 (jibaengnyeong) literally means a ghost 'bound to the earth/place.' In Korean folk belief, some spirits cannot move on because they are anchored to a specific spot — usually where they died or where their remains are. Unlike wandering ghosts, a jibaengnyeong has nowhere else to go, which is why Yuri can't simply tell it to leave.
In Korean Buddhist tradition, a person's soul spends 49 days in an in-between state after death before moving on to the next life — judgement happens once a week for seven weeks. The drama uses this as its plot mechanic: Yuri is given 49 days as a living person to 'find her place,' echoing this deeply familiar cultural belief.