#
Gossip and social stigma around suicide
0:51
Self-harm
Korean school gossip networks spread fast and carry real weight. These classmates are casually repeating rumours about a transfer student's family — in Korean schools, a student's family background (부모님의 배경) is considered very much part of their identity, and unusual home situations invite intense scrutiny from peers and parents alike.
This note discusses suicide or
self-injury. If you need someone to talk to: in Korea call 109,
in the US call or text 988, or
find a helpline in your country.
#
Skeleton trading-card character
1:58
The boy is giving away a 스켈레톤 (skeleton) character card from a popular fantasy collectible-card game. In Korean elementary and middle schools, trading and gifting character cards — especially rare 'legendary' ones — is a classic way to signal friendship and status. Giving your best card to someone is a big deal.
#
Police handling of apparent suicide
3:21
Self-harm
In South Korea, when police determine a death is a 자살 (jasal, suicide) rather than a crime, they can close the case quickly with a brief statement and minimal witness questioning. The officer's request to 'wrap it up fast for the other students' reflects real institutional pressure to keep suicide incidents quiet in school settings to avoid copycat concerns.
This note discusses suicide or
self-injury. If you need someone to talk to: in Korea call 109,
in the US call or text 988, or
find a helpline in your country.
#
동티 — spiritual backlash
8:02
동티 (dongti) is a traditional Korean folk concept meaning bad luck or illness that strikes you when you disturb something sacred, cursed, or taboo — like accidentally moving a grave stone or touching a spirit's object. Haryoung uses it here to explain why the app caused a violent physical reaction, framing it within old shamanistic belief rather than technology.
#
주구 — curse-carrying object
8:17
주구 (jugu) is a term from Korean folk-religion and horror tradition referring to an object used to transmit a 저주 (curse). Unlike Western cursed items that are simply dangerous to own, a 주구 is specifically a vessel that moves the curse from one person to another — making whoever receives it the new target. The sister's explanation that it has no fixed form (letter, image, video, app) draws on this concept.
#
Trauma and recurring nightmares
11:44
Seah mentions seeing her parents' disfigured faces every night in her dreams. In Korean culture there is often reluctance — especially among young people — to openly discuss psychological trauma or seek therapy, partly due to stigma around mental health (정신 건강). Her confessing this to friends is a rare and vulnerable moment, treated with great weight by the show.
#
Transferring schools (전학)
13:52
Changing schools mid-year (전학, jeonhak) is socially disruptive in Korea, where tight class bonds form early and last all year — students often sit with the same classmates and homeroom teacher daily. Arriving as a 전학생 marks you as an outsider, and Seah admitting she nearly quit athletics after transferring shows how isolating the experience can be.
#
119 — Korean emergency services
19:54
119 is South Korea's combined fire and emergency medical services number, equivalent to 911 in the US or 999 in the UK. Calling 119 (rather than 112, which is police) is the right call for a medical emergency, and dispatchers stay on the line to guide callers — which is exactly what the operator asks Seah to do.
#
Korean slang: 좆 됐다
23:53
Mature
좆 됐다 (jot doetda) is a very crude expression — literally referencing male anatomy — used to mean 'I'm totally screwed' or 'everything's gone to hell.' It's the kind of language Korean teenagers use freely among close friends but would never say in front of parents or teachers. Nari laughing at it despite everything shows the dark humour the friends use to cope.
#
에이시스톨 / 에피네프린 — resuscitation terms
26:26
에이시스톨 (asystole) means the heart has flatlined — no electrical activity at all, the most critical form of cardiac arrest. 에피네프린 (epinephrine, i.e. adrenaline) is the first drug given in a resuscitation attempt to try to restart the heart. Korean hospital dramas use these real clinical terms accurately, and viewers familiar with 응급실 (emergency room) shows will recognise them instantly.
#
사주 (Four Pillars of Destiny)
27:14
사주 (saju) is a traditional Korean fortune-telling system based on a person's birth year, month, day, and hour — four pairs of characters called the 'four pillars.' Writing someone's 사주 and name on paper to perform a ritual is a classic element of Korean shamanistic practice (무속), where a person's full identity on paper becomes a stand-in for their soul.