10 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 doctor's description of a brain simply 'shutting down' reflects a very real phenomenon in Korean work culture. Korea has one of the longest average working weeks in the OECD, and the term 과로 (gwaro, overwork) appears regularly in news reports about health crises and even deaths attributed to chronic exhaustion. A young manager collapsing from overwork is sadly not an unusual plot point — it mirrors real headlines.
The word 기지배 is a coarse, demeaning term for women or girls, roughly equivalent to calling someone a 'wench' or using a crude gender slur. The phrase that follows — that women need to be 'stepped on' every three days to keep them in line — is a misogynistic folk saying that older or more conservative Korean men sometimes cite, usually ironically in modern dramas, to signal a character's toxic attitudes.
Many Korean companies historically included a 사내 연애 금지 (sa-nae yeonae geumji) clause — a formal ban on employees dating each other — in their internal rules (사규, sagyu). The logic was that romantic entanglements distract from work or create favoritism. Most companies stopped enforcing such rules years ago, but as Yoo Ji-hyuk points out here, the clauses often remain on the books, making them a handy weapon in office politics.
The manager corrects Ji-won by saying sushi (초밥, chobap) should not be eaten with chopsticks. In Japanese and Korean sushi culture, nigiri is traditionally eaten by hand so the delicate rice doesn't fall apart. It's a small flex of food knowledge — the kind of thing Korean dining culture treats as a mark of sophistication, and here it lets the manager position himself as Ji-won's worldly benefactor.
쌈닭 (ssamdak) literally means 'fighting chicken' — the kind of bantam bird bred for cockfighting that refuses to back down no matter how outmatched it looks. In everyday Korean slang it describes a person, usually affectionately, who is feisty and always ready to scrap. Being called the 'most righteous 쌈닭 in the world' is the instructor's way of saying Ji-won fights for the right reasons, not just out of stubbornness.
바스크 치즈케이크 (Basque cheesecake) became a massive food trend in South Korea around 2019–2021, with dedicated cafés and bakeries opening across Seoul. Its burnt, crustless top and creamy center made it photogenic and shareable on social media, cementing it as a prestige dessert gift. A chef friend baking one from scratch and sending it to the office reads immediately to a Korean audience as a high-effort, emotionally loaded gesture.
Fried chicken (치킨) is practically the national comfort food of South Korea, and the detail that Park Min-hwan chose 간장치킨 (soy-sauce glazed chicken) — Ji-won's favourite variety — is a meaningful act of care. Korea has hundreds of fried-chicken franchise chains and ordering 치킨 with friends late in the evening is a deeply ingrained social ritual. The mention of eating it at a window watching the night view (야경) signals the trio's warmest shared memory together.
갑질 (gapjil) is the term for the bullying behavior of someone in a position of power — a boss, a VIP customer, or a wealthy person — toward someone subordinate. 갑 (gap) means 'Party A' in a contract, i.e., the one who holds power. High-profile 갑질 incidents involving executives and cabin crew have been a recurring scandal in South Korea, making the 'nut rage'-style airplane scene immediately recognizable to Korean viewers as a well-worn type of real-world news story.
The two BTS songs Ji-won and Yoo Ji-hyuk name — 'Dynamite' and 'Spring Day' (봄날) — carry distinct emotional colors that mirror the scene. 'Dynamite' is bright and celebratory; 'Spring Day' is a slow, aching ballad about longing for someone far away. Ji-won wanting 'Dynamite' for her victory mood, then both of them quietly admitting they prefer 'Spring Day,' is a small, shared confession wrapped in music.
The line about 'things that are meant to happen will always happen' and 'my time already ended back then' are callbacks to the show's core premise: Ji-won is a woman who has returned to the past after dying, armed with the knowledge of how events unfold. In Korean fantasy dramas this device is called 회귀 (hoegwi, regression). Her refusing to run away is her declaring she will use that foreknowledge to rewrite her fate rather than simply relive it.