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 Korea, alcohol — especially 소주 (soju) — is deeply woven into daily stress relief, and it's common for people to drink alone at home when overwhelmed. The concern here is doubled: post-surgical patients are strictly told not to drink, so six days of solo drinking after a hospital discharge is both a cultural act of self-numbing and a serious medical red flag.
Noboribetsu (登別, 노보리베쓰) in Hokkaido is one of Japan's most famous hot-spring resort towns and a hugely popular short-haul destination for Korean families. Flying from Seoul to Hokkaido takes under three hours, so a quick family escape there is a familiar, almost clichéd comfort choice — the Korean equivalent of a weekend in a spa hotel.
결혼기념일 (gyeolhon ginyeomil) — a wedding anniversary — is taken seriously in Korean couple culture, and traveling to celebrate it, even briefly, is common. The mild friction in this scene (why fly all the way to Japan for just two nights?) reflects a very Korean tendency to mark the date no matter how inconvenient the logistics.
The scene depicts 박정우 having locked himself in his hospital office and become unresponsive — the drama's way of showing a suicide attempt by a character who had previously been mentioned as suffering from depression (우울증). In South Korea, suicide has been a serious public health issue, and scenes like this are sometimes followed by mental health helpline notices. If you or someone you know is struggling, please reach out to a crisis line.
The doctor's comment that 정우 'seemed to have had some depression' reflects a long-standing stigma problem in Korea: mental health conditions are often noticed but not acted on, especially among high-achieving professionals. Seeking psychiatric help has historically carried social shame, making quiet suffering behind closed doors tragically common.
국과수 is the National Forensic Service, South Korea's main forensic science agency. Its DNA database stores profiles from convicted criminals, which is how a broken fingernail recovered during surgery could be matched to a man with a 2004 criminal record. The detail is procedurally accurate — Korean law allows DNA collection from those sentenced for violent crimes.
Paying ghost employees through a family-owned hospital's subsidiary was a classic way to funnel black money in 1990s Korea, before stricter financial audits existed. Listing rural relatives who 'had no idea what Myeongse Hospital even was' as salaried researchers was a real technique used to launder organized-crime payments — the drama is nodding to a documented era of chaebol and underworld collusion.
창민 is invoking a shared secret from two decades ago — a fire (화재 사건) — to pressure 진철 into helping him. This kind of long-dormant mutual blackmail between a powerful figure and his hired criminal is a staple of Korean crime dramas, reflecting real cases where chaebol figures used intermediaries (건달, street gangsters) for dirty work and then stayed entangled with them for life.
정우's written confession reveals that 최진철 is his biological father — the result of an assault. In Korean society, 출생의 비밀 (the secret of one's birth) carries enormous social weight. Being born outside of wedlock, especially through violence, was a source of deep shame for both mother and child, and families went to extreme lengths to conceal it. This backstory reframes decades of the characters' behavior.
선우 flatly confirms to 진철 that yes, he does have a time machine — the Himalayan incense sticks (향) seen throughout the series. In Korean drama tradition, this kind of deadpan admission of a supernatural truth to the villain is a dramatic power move: the viewer understands it; the villain cannot process it. The incense sticks are now the story's central MacGuffin as both sides race to control them.
진철 talks about going back in time to eliminate '머리에 피도 안 마른 고등학생 막내아들' — literally 'the youngest son, a high-schooler whose blood hasn't even dried on his head yet,' a Korean idiom for someone too young and inexperienced to be taken seriously. The chilling irony is that he is unknowingly threatening to kill his own biological son, 정우, as a teenager.
선고 공판 (seon-go gong-pan) is the sentencing hearing — the final stage of a Korean criminal trial, held separately from the verdict. A 징역 10년 (ten-year prison sentence) for the charges 진철 faced would be considered relatively light given the attempted murder and decades of corruption, which is exactly why the courtroom erupts and why 선우 is furious enough to act immediately.