My Demon Episode 4 continues to blend romance, emotional vulnerability, corporate intrigue, and supernatural tension, delivering one of the series’ most layered and entertaining installments yet.
Episode Summary
The episode opens at the funeral with Do-hee’s shocking marriage proposal to Gu-won. He firmly rejects her, leaving her stunned. Despite Seok-hoon’s attempt to intervene, Do-hee silences him and walks away — with Gu-won instinctively following as her bodyguard. He insists he keeps personal and professional matters separate, while paparazzi capture the awkward exit.
Back at Cheon-sook’s office, the family reacts with fury. Su-ahn rages against her mother’s “betrayal,” while Suk-min calmly declares fighting the will is pointless. Instead, he vows to give his mother exactly what she wanted — by playing hardball. A glance at Cheon-sook’s eyeglasses triggers a flashback to 12 years earlier, when she forced him to face legal consequences for a drunk-driving incident that injured someone. The memory highlights the strained mother-son dynamic.
Do-gyeon, meanwhile, smokes in the garden and deliberately crushes a butterfly underfoot — a symbolic rejection of Cheon-sook’s legacy and wishes. His visible resentment toward his grandmother raises questions about the depth of his hatred.
During the drive home, Do-hee tells Gu-won to forget the proposal, calling it “sleep-talking” to save face. Gu-won remains indifferent, stating he has no interest in marriage, which only frustrates her more. The car radio playing love and proposal songs adds unintentional comedy to the tense atmosphere. At her apartment, Do-hee insists the rejection won’t affect their working relationship — though her anger suggests otherwise.
Gu-won later returns to deliver Cheon-sook’s forgotten letter and overhears Do-hee jokingly plotting to drug and drag him to a wedding venue. He quietly retreats. Seok-hoon visits Do-hee out of concern, learning about the repeated attempts on her life. He reassures her that Cheon-sook’s death is not her fault and offers protection — even adding himself as her emergency contact. After he leaves, Do-hee realizes she is truly alone for the first time in 17 years.
At home, Bok-gyu makes Gu-won watch The Bodyguard and explains the “three rules” of being a bodyguard: never lose sight of her, never stray from her side, and never fall in love. He teases Gu-won about being clueless about love — a prediction Gu-won hotly denies.
The viral spread of the rejected proposal humiliates Do-hee publicly. She confronts Gu-won, demanding an honest reason for his refusal. He insists he simply wants to remain single. Their bickering escalates until Do-hee storms off, only for Gu-won to offer her a ride, citing the ongoing danger. During the drive, Do-hee opens up about her parents’ death, her avoidance of grief through work, and her belief that humans chase fleeting happiness. She falls asleep, and Gu-won quietly places Cheon-sook’s letter in her bag.
Do-hee later reads the heartfelt letter in which Cheon-sook apologizes for leaving her “among wolves,” urges her to find someone to ease her loneliness, and gives her permission to walk away if the burden becomes too heavy. Intercut scenes show Suk-min blocking a post-mortem, Su-ahn’s aggression, and Cheon-sook’s cremation. Do-hee silently vows to uncover the truth.
Meanwhile, the mafia gang buries their boss and, thanks to Gwang-chol’s interference, learns more about Gu-won’s identity and location. Gu-won begins recovering fragmented memories of his human life, alarming Bok-gyu — as returning memories signal Gu-won is becoming more human and losing his immortality. To recharge, Gu-won sticks closer to Do-hee, leading to more hand-holding arguments.
At work, Do-hee sets up a blind date and asks Da-jeong to retrieve CCTV footage from Cheon-sook’s house. Gu-won offers to use his powers to locate the killer, but the plan fails because the assailant wore a mask. In a cramped storage room, they overhear employees gossiping about their chemistry — leading to an awkward, close moment before Gu-won teleports them out.
Flashbacks reveal the leather-jacketed man accessing Cheon-sook’s bag and tampering with her medication, while Cheon-sook’s final words (“the apple doesn’t fall far from the tree”) strongly hint at a family connection — possibly Do-gyeon.
At the team dinner, Gu-won refuses to drink while on duty but repeatedly tries to hold Do-hee’s hand to recharge. When Min-soo asks why he rejected Do-hee, Gu-won’s infamous reply — “liking pork doesn’t mean you marry the pig” — infuriates her. Hurt and angry, Do-hee storms off. Gu-won, confused, leaves and is ambushed by the mafia gang. A brutal fight leaves him seriously injured.
Do-hee frantically searches for him, finds him being beaten, and intervenes with pepper spray. Gu-won, touched by her bravery, asks if she knows how to Tango — explaining that partners must trust each other completely. As they begin a dramatic Tango-fight sequence against the attackers, a mysterious photographer captures Gu-won magically healing after holding Do-hee’s hand.
The episode closes with the dance ending and Gu-won reciting the three bodyguard rules while staring into Do-hee’s eyes — silently questioning whether he has fallen for her.
Episode Review
Episode 4 shines through its excellent character development, emotional depth, and clever tonal balance. The slow-burn romance between Do-hee and Gu-won gains complexity as both grapple with vulnerability, pride, and unspoken feelings. Gu-won’s recovering human memories and fear of mortality add rich layers to his character, while Do-hee’s loneliness and determination to honor Cheon-sook make her journey deeply relatable.
The mystery intensifies with strong hints pointing toward Do-gyeon as the likely killer, Suk-min’s ruthless ambition, and the mysterious woman’s cryptic warnings. The Tango-fight scene is a standout — beautifully choreographed, romantic, and thrilling all at once.
Questions continue to mount: What did Cheon-sook’s letter to Suk-min say? Who is the strange woman watching Gu-won and Do-hee? What is Ga-young’s true connection to Gu-won? And how will Gu-won’s growing humanity affect his role as a demon?
With heartfelt moments, sharp humor, escalating danger, and a perfectly executed cliffhanger, Episode 4 keeps viewers fully invested in this captivating fantasy-romance thriller.
Keywords
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