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.
In Korean drug slang, '500그람' (500 grams) is a street shorthand for a quantity of illicit substances — here it is being used to taunt the artist character about her drug use. The scene makes clear that the person speaking is holding it over her as leverage, not making a grocery order.
시에스타 is the Spanish word for an afternoon nap, borrowed directly into Korean. Naming the boutique '시에스타' is an upscale lifestyle signal — imported European words give Korean fashion shops a premium image. The character's pun on the name ('I like doing it in the daytime') is a deliberately crude joke playing off that chic veneer.
보육원 (boyugwon) are government-run group homes for children without family caregivers. In Korea there is a lasting social stigma attached to growing up in one, and children who age out often form tight, loyalty-based networks with each other. Seong-hui mentioning brothers she grew up with at a 보육원 explains why she has contacts outside normal social circles.
Traditional Korean folk belief (influenced by Buddhism and Confucianism) imagines a judgment after death where good deeds earn a better next life or paradise and bad deeds send a soul to 지옥 (jiok — hell). Dong-eun is reframing this: she says that since she is going to hell regardless of how she lives, she might as well do whatever it takes for her revenge. It is dark, sardonic humour.
수의 (suui) are the white ceremonial garments a person is dressed in for burial. Telling a student he will end up wearing 수의 regardless of his grades is a blunt, shocking way of saying his future is already ruined — in Korean culture, mentioning burial clothes to a living person is considered extremely ominous and offensive.
이세돌 (Lee Se-dol) is the most celebrated Korean 바둑 (baduk / Go) player in modern history, internationally famous for his 2016 match against Google's AlphaGo AI. Asking if someone wants to beat 이세돌 is the Korean equivalent of asking a tennis beginner if they want to beat Serena Williams — it signals the goal is almost impossibly high.
청심환 (cheongsimhwan) are small, dark traditional Korean medicine pills taken to calm nerves and sharpen focus before high-stakes events. Generations of Korean students have popped one before the 수능 (college entrance exam) or 임용고시 (teacher licensing exam). Giving them as a good-luck gift before a big test is a very common and affectionate gesture.
임용고시 (imyong gosi) is the fiercely competitive state exam that anyone must pass to become a public-school teacher in Korea. Pass rates hover around 10–30 % depending on the subject, and many graduates sit it multiple times over several years. Dong-eun has already passed; the person she is gifting the 청심환 to is still trying.
영춘화 (迎春花, forsythia-like winter jasmine) literally means 'flower that greets spring.' During the Joseon dynasty, scholars who topped the state civil service exam (장원급제) had a paper flower called 어사화 (御賜花, 'royally bestowed flower') placed in their hat by the king himself. The weather report is weaving genuine historical context into the forecast, which is the kind of detail Korean news audiences appreciate.
In Korea, 재벌 (chaebol) conglomerates pass vast assets — golf courses, hotels, entire business units — between family generations, often regardless of the heirs' own ability.손명오's bitter remark about 'parents who got them a golf course' nods directly at real controversies over unfair inheritance that regularly appear in Korean headlines and drama storylines alike.
같은 편 (gateun pyeon) means 'to be on the same side' or 'to join forces.' In Korean social dynamics — at school, in workplaces, and in family hierarchies — declaring someone 같은 편 is a serious, loaded proposal. It implies shared risk, mutual secrecy, and loyalty. Dong-eun using this phrase to a virtual stranger signals she has reached a stage in her plan where she is ready to pull in unexpected allies.
Asking someone to kill your husband is a request for 청부살인 (hired killing). This is distinct from self-harm; the target is a third party. The show frames this as the dramatic hook ending the episode — a desperate person who has spent months gathering leverage finally naming what she actually wants in return.