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.
짠 (jjan) is the Korean equivalent of 'Cheers!' — you say it while clinking glasses. It's used for everything from soju shots with close friends to a casual drink at a convenience store. The word mimics the sound the glasses make when they touch.
관상 (gwansang) is the traditional Korean practice of reading a person's character and fate from their facial features — think of it as physiognomy with a long cultural history. Saying '관상은 과학이야' ('face-reading is science') is a popular sarcastic joke in Korea, poking fun at people who judge others on looks. The phrase went viral after the 2013 film Physiognomy (관상) and is still a go-to punchline.
기리고 can be read as an archaic or poetic Korean verb form meaning 'to long for' or 'to yearn.' Naming a wish-granting app after longing is deliberate — it evokes the desperate desire behind every wish entered into it. The word has a slightly ominous, old-fashioned weight compared to everyday modern Korean.
The idea that a wish must be paid for with one's life echoes a recurring motif in Korean folk belief and ghost stories: 대가 (daega), meaning 'price' or 'cost,' is always demanded when supernatural forces intervene in human affairs. This moral logic — nothing comes for free, especially from the spirit world — appears in shaman rituals (무속) and classic Korean horror storytelling alike.
The classmates instantly drag Nari's whole family into their gossip, treating a parent's past as proof of a child's bad character. In Korea, where family reputation (집안) carries real social weight, this kind of collective blame — extending a person's perceived flaws to their relatives — is a recognized and painful form of social bullying among teenagers.
The group is debating whether an app that runs a countdown threatening the user's life could be real. In Korean internet culture, cursed-app urban legends circulate widely among teenagers, often describing timers tied to self-harm or death. These stories are treated as creepypasta-style horror but can carry real anxiety for young users.
무당 (mudang) is a Korean shaman — typically a woman who acts as a medium between the living and the spirit world. Being a mudang's daughter carries a complicated social stigma in modern Korea; many people are privately superstitious while publicly dismissing shamanism. It also explains why someone like Kwon Siwon might have access to knowledge or tools that blur the line between folk magic and tech.
스미싱 (seumissing) is the Korean term for smishing — malicious apps or links sent via text that hijack your phone's data or functions once installed. It's a real and widespread concern in Korea; the government regularly runs public awareness campaigns about it. Ha-jun reaching for this explanation shows he's trying to find a rational framework for what the app is doing.
국대 (gukdae) is an abbreviation of 국가대표 (gukga daepyo), meaning 'national representative' — i.e., a spot on Korea's national sports team. For a high-school athlete, making 국대 is the ultimate goal, roughly equivalent to going pro in a Western context. Kun-woo casually mentioning he was working toward this for Se-ah shows how seriously youth sports careers are taken.
Korean schools keep a 보건실 (bogeon-sil), a nurse's office that logs every student visit with the student's name, date, and injury description — handwritten in physical ledgers. These records are stored long-term and are treated as semi-official school documents. The fact that old ledgers are still sitting on a shelf is realistic, and it's exactly why finding Kwon Siwon's entry with a facial laceration is possible years later.
In Korea you can visit any 통신사 (carrier store — KT, SKT, LG U+) and register your device as stolen, which immediately locks the IMEI and logs out all messenger accounts tied to that number. Se-ah did this to her own phone, deliberately turning it into a 벽돌 폰 (brick phone) so nobody — including whatever is contacting people through the app — can reach her on it.
사주 (saju) refers to the four pillars of a person's birth: year, month, day, and hour — the foundation of traditional Korean fortune-telling. Giving your 사주 to a fortune-teller or shaman is the first step in any ritual reading. Linking it to wish-granting here ties the app directly to 무속 (shamanic) practice, where your birth data is the key that connects you to the spirit world.