8 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.
Eun-tak describes a folk belief that catching a falling maple leaf while walking with someone means you two will fall in love. She links it to the more widely known Korean superstition that catching a falling cherry-blossom petal (벚꽃잎) while walking with your first love makes that love come true. These are the kinds of sweet seasonal omens Korean teens pass around as fact.
The Grim Reaper (저승사자, jeoseung-saja) offers the dead a cup of tea that erases all memories of their earthly life before they cross over. This is a Korean folk-belief version of the Greek river Lethe — the idea that the dead must forget the living so they can move on peacefully. In this drama the tea is also a moral tool: he withholds it from the drunk driver so the man carries his guilt into the afterlife.
The teacher mentions '수시' (susi), Korea's early college-application track. Students submit portfolios, essays, or take separate university tests in the autumn — well before the national CSAT exam (수능, suneung) in November. Being a 고3 (third-year high-schooler, equivalent to a senior) during 수시 season is one of the most stressful periods in Korean adolescent life, which is why the teacher treats Eun-tak's late arrival as nearly unforgivable.
The Grim Reaper hums '도깨비 빤쓰는 튼튼해요' — a well-known Korean children's folk song about a goblin's indestructible, fire-proof underwear. Every Korean who grew up watching kids' TV knows it. Singing it to Kim Shin, an actual goblin, is the drama's way of having fun with its own premise, and Kim Shin's mortified reaction lands harder because viewers recognise the song instantly.
The Grim Reaper explains that his distinctive black hat functions as a supernatural identification badge — the dying can see him through it, but ordinary living people cannot perceive it at all. This is the drama's clever updating of the traditional Korean 저승사자, who in folk imagery wore a black horsehair hat (갓) and official robes. The modern drama keeps the hat as the only costume element that carries real supernatural power.
The aunt reveals that Eun-tak's late mother had been paying into a '태아 보험' (prenatal/infant insurance policy) since before Eun-tak was born, plus a life-insurance policy on herself — a total payout of around 150 million won (roughly $110,000 USD). Taking out prenatal insurance and life insurance for a young child is extremely common in Korea; the dramatic irony is that the mother apparently knew her time was short, which reframes everything the audience has seen about Eun-tak's lonely survival.
The Grim Reaper explains that he has been quietly collecting '노잣돈' (nojatdon) — the coins or cash placed on a coffin or ritual table so the dead can pay the ferryman who carries souls across the river to the afterlife. The custom is related to both Korean shamanist ritual and Buddhist folk practice. Three hundred years of hoarding a few coins at a time is played for laughs, but it is grounded in a real funeral rite viewers would recognise.
Eun-tak asks Kim Shin to pass her thanks along to the 저승사자 (Grim Reaper). In Korean folk belief the Grim Reaper is a neutral official of the afterlife bureaucracy — not evil, just doing his job. Thanking him for choosing *not* to take her is a small but culturally loaded moment: it treats death's agent as someone you can be polite to, which reflects the Korean tendency to personalise the afterlife as a government office with rules and paperwork rather than a place of judgment.