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.
'씨' (and its fuller form 씨발) is one of the most common Korean expletives, roughly equivalent to 'f***' in English. Characters drop it under extreme stress, and you'll hear it throughout this episode as the situation in the dormitory gets more desperate. It's considered very coarse, so in polite settings Koreans sometimes swallow the word or just say the first syllable, as several characters do here.
안기부 (Angibu) stands for 국가안전기획부, the Agency for National Security Planning — South Korea's powerful domestic intelligence service that operated from 1980 to 1999. In the late 1980s setting of this drama, the Angibu was notorious for running informants, conducting surveillance on campuses, and interrogating anyone suspected of pro-North sympathies, which is why its reach inside a university dormitory feels plausible to Korean viewers.
발인 (barin) is the formal procession that moves a coffin from the place of mourning to the burial site or crematorium — it's the moment the family officially 'sends off' the deceased. Missing a sibling's 발인 is considered one of the most painful failures of familial duty in Korean culture, which is why Young-ro's desperation to leave the dormitory on this particular day carries such emotional weight.
The term 부비 트랩 (from English 'booby trap') was well known in South Korea largely through the lens of the Korean War and Cold War espionage stories. North Korean agents in films and dramas are routinely shown setting improvised explosive devices in confined spaces, so Su-ho's order to mine the corridors immediately signals to Korean viewers that the team is shifting from negotiation mode to a last-resort defensive posture.
도사 (dosa) literally means a master or sage, but in everyday Korean it's the common title for a traditional fortune-teller or shaman-adjacent spiritual advisor. Wealthy households in the 1980s and 90s frequently consulted a trusted 도사 for predictions about family crises, business decisions, and politics. Seong-sim casually citing 'what Cheonnyeong Dosa said' shows how deeply this practice was woven into upper-class life, even amid a televised national emergency.
'라이방' is the Korean phonetic rendering of Ray-Ban, and in the late 1980s a genuine pair was an expensive imported luxury that signaled wealth and Western sophistication. The women's excited chatter about the director's Ray-Bans selling out is a sharp slice of the era's consumer culture, when foreign brand goods were tightly controlled and ownership of them was a form of social currency.
청산가리 (cheongsan-gari) is the Korean word for potassium cyanide. North Korean agents sent on high-risk missions were historically issued a cyanide capsule and ordered to bite down on it if capture was imminent, so they could die before being interrogated. Su-ho invoking a comrade who died this way reminds viewers of the disposable role rank-and-file operatives played — their deaths officially glorified but in reality convenient.
닭곰 (dakgom) is a slow-simmered chicken broth dish — essentially a North Korean version of the Korean-wide favourite 닭곰탕 — that is associated with home cooking and recovery from illness. Eung-cheol's quietly embarrassed wish for a bowl of 닭곰 is a small, humanising detail: even in the middle of a covert mission, what a sick young man craves is the taste of home.
국가보위부 (Gukga Bowibo) is North Korea's State Security Department, the internal secret-police body responsible for monitoring the loyalty of citizens — including, crucially, other agents. The revelation that Gyeok-chan received a direct order from its deputy director to watch Su-ho and 'execute him without hesitation' if his ideological commitment wavered shows viewers the layered mutual surveillance built into North Korean covert operations.
국비 유학생 (gukbi yuhaksaeng) literally means a 'national-expense overseas student' — someone whose entire study abroad is paid for by the South Korean government through a highly competitive scholarship. Being selected was a mark of exceptional academic achievement and family pride in this era, which sharpens the tragedy Bun-ok describes: her brilliant, state-sponsored sister ended up accused of espionage and died in custody.
Throughout the 1970s and 80s, the 안기부 and its predecessor organisations were documented to have coerced confessions and manufactured espionage charges against innocent people, particularly Koreans who had studied or lived abroad. Seung-hee's furious outburst — that two innocent people were killed as 'spies' while the agents received commendations — reflects real historical grievances that are still painful for many Korean families today.
'가요톱텐' (Gayo Top Ten) was KBS's flagship music countdown programme from 1981 to 1998, the Korean equivalent of a TV chart show like Top of the Pops. Scoring number one on 가요톱텐 was the definitive marker of pop stardom in this era, so the reporter's sarcastic namecheck of singer 'Lee Yu-rim' — caught in a compromising situation — lands as a celebrity-scandal joke Korean viewers would immediately recognise.
'뽕' is colloquial Korean slang for a stimulant drug, most commonly methamphetamine (필로폰), which has been the dominant illegal drug in South Korea since at least the 1970s. The reporter's line about the president's son being 'on 뽕' is a direct, coarse accusation of drug use — the kind of explosive tabloid secret that would destroy a political family and explains why the scene instantly escalates into violence.