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Our Unwritten Seoul korean drama review
Completed
Our Unwritten Seoul
1 people found this review helpful
by Rei
Aug 19, 2025
12 of 12 episodes seen
Completed
Overall 9.0
Story 8.0
Acting/Cast 10.0
Music 9.0
Rewatch Value 10.0

Our Unwritten Seoul: Tears, Triumphs, and Everything in Between

Let me be honest here: my primary reason to watch Our Unwritten Seoul was Park Bo-young. Her dual performance as twin sisters Yu Mi-rae and Yu Mi-ji wasn’t acting, it was borderline sorcery.

Her portrayal of Yu Mi-rae and Yu Mi-ji was nothing short of spellbinding. Park Bo-young didn’t simply “differentiate” the sisters, she inhabited them so completely that I often forgot it was the same actress pulling a double duty. It wasn’t just about different hairstyles or wardrobes. It was in the bones of the performance: body language, pacing of speech, vocal pitch, rhythm of breathing. Even her eyes supported the distinction, Mi-ji’s gaze would lock onto you with unwavering boldness, her pupils contracting as if she could pin you to the wall with confidence alone. Meanwhile, Mi-rae’s softer presence lived in subtler shifts of eye contact, in those small, almost imperceptible glances that spoke of someone cautious yet endlessly tender.

It’s rare that you can watch a drama and believe, even for a split second, that an actor has conjured another version of themselves into existence. But Park Bo-young did that to me here. The illusion was seamless not because of clever camera trickery, but because she responded to her “other self” with such organic timing and emotional reciprocity that it felt like both sisters were alive in the same frame. She wasn’t just hitting marks on a green screen, she was listening, reacting, breathing with her own double.

And here’s the thing: my favorite moments in the entire drama weren’t the big melodramatic crescendos or the jaw-dropping reveals. They were the quiet ones, the scenes where Mi-rae and Mi-ji sat across from each other, twin to twin, sister to sister, and just… talked. That’s where the spell truly took hold. Those conversations didn’t just look technically seamless (though they absolutely were); they carried a raw, unfiltered intimacy that made the drama pulse with life. You could feel every ounce of unspoken pain, shared memory, and stubborn love crystallize in those exchanges. It wasn’t Park Bo-young against a green screen anymore. It was two sisters, fully present, breathing the same air.

What makes this sorcery so mesmerizing is that Park Bo-young wasn’t only flipping between characters. She was actively building chemistry with herself. Every tilt of the head, every softened gaze, every flicker of body language was not only in character but also in response to her other performance. She didn’t just double herself; she gave each twin the ability to react, clash, and love in ways that felt utterly real. It’s the kind of alchemy that turns acting into something higher: not performance, but presence. She conjured a sisterhood bond out of thin air and then convinced us it had been there all along.

And while Park Bo-young rightfully commands the spotlight, I’d be doing a disservice if I didn’t tip my metaphorical hat to Lee Jae-in, who played the twins in their teenage years. At just twenty-one, she’s already building a respectable filmography, and you can see every ounce of that experience at work here. Playing one character convincingly is already a high bar, but switching seamlessly between two, and making sure they align with Bo-young’s adult versions, is the sort of acting tightrope that could break a drama if mishandled.

If Park Bo-young was the magician casting spells, Park Jin-young was the grounding force that made every illusion believable. He stepped into Lee Ho-su with his signature calm melancholy, the same quiet intensity many might remember from The Witch. But here, that stillness became something more layered: a man who has been quietly fighting himself since high school, carrying an invisible weight he can’t seem to set down.

What made Jin-young’s performance even more mesmerizing was how much it depended on who Park Bo-young was being in the moment. He had to recalibrate constantly: his Ho-su was tender and supportive, and vulnerable around Mi-ji, but guarded, direct, and restrained around Mi-rae. Watching him adjust his energy depending on which “sister” he thought he was speaking to was an acting masterclass in itself. Their chemistry didn’t just flicker on like a switch; it bent and reshaped itself depending on identity, tone, and circumstance. That’s rare in Kdrama land, where we’ve all seen leads struggle just to make one dynamic believable. Jin-young and Bo-young made two entirely distinct relationships feel alive and breathing.

Here comes my favourite part, plot analysis. The central narrative was a rich exploration of siblinghood, identity, and emotional survival. Mi-ji, bubbly yet insecure, constantly craved recognition beyond being “Mi-rae’s sister.” Her depression arc was heart-wrenching but believable, her forced brightness a shield against relapse. Mi-rae, frail but driven, lived shackled by the weight of self-imposed responsibility – her strongest skill, as she admitted, was “enduring hardship.” The dichotomy of their coping mechanisms was fascinating and devastating to watch.

Mi-ji, the brighter twin, radiates warmth and humor, but it’s a carefully chosen brightness. She isn’t naïve, her cheerfulness is a shield she wields against relapse into the depression she once fought. Every joke, every smile feels like an act of resistance, a refusal to sink again. She survives by creating light, even if it burns her at times.

There’s something quietly heroic about the way Mi-ji navigates life. She is laughter in a room that threatens to collapse under its own silence. She is the friend who cracks a joke when tears are about to spill, not because she can’t handle pain, but because she knows too well what it feels like to drown in it. Her brightness is not denial. it’s defiance. Park Bo-young plays her with that razor-thin balance of someone who is both deeply wounded and fiercely protective of her own healing. Watching her feels like watching sunlight that refuses to dim, even when clouds roll in.

If Mi-ji’s light is born of resistance, Mi-rae’s quiet is born of endurance. With her frail health, Mi-rae learned early on that conserving energy, physically and emotionally, was her safest path. To outsiders, her cold detachment looks like aloofness, but the truth, which everyone around her quietly knows, is that she’s simply hiding her vulnerability behind silence. She carries her emotions inward, pressing them so deep that only Mi-ji, her twin, has ever been allowed to see the unfiltered version of her.

It’s heartbreaking, because her strength is also her cage. Endurance keeps her alive, but it also isolates her, creating a quiet fortress where no one is allowed in. She is always seen but rarely understood, always present but rarely known, except by Mi-ji, who has been both her witness and her refuge. Mi-rae’s stillness becomes a shield, a way to keep pain from spilling out, but it also robs her of the ability to fully live. And yet, Mi-ji isn’t free either, her weapon of choice is forced cheer, the constant laughter and lightness she uses to keep despair from seeping back in. Together, they embody two sides of the same coin: one who refuses to feel in order to survive, and one who overflows with feeling to prove she’s still surviving. It’s a duality that reveals not just their love as sisters, but the ways we all invent fragile methods to keep our own shadows at bay.

As brilliant as the twins were at carrying the emotional heart of Our Unwritten Seoul, it would be a crime to ignore the role the supporting cast played in making this world breathe. A good drama can live off the strength of its leads, sure, but a great drama wraps those leads in a community of characters who feel lived-in, messy, flawed, and deeply human. This drama does exactly that.

Let’s start with Kim Sun-young, because, really, where else could I begin? She plays Yeom Beon-hong, Ho-su’s mother, with such devastating precision that you almost forget you’re watching an actor. There’s a reason she’s been dubbed one of the “S-tier mothers of Kdramaland”, she has this uncanny ability to pull a thread of familial pain and make it unravel right in front of you. Her confrontation scene with Ho-su in episode 11 was nothing short of lethal. No screaming dramatics, no manipulative background swell, just raw, grounded truth between a mother and son who no longer know how to stand on the same side of the line. Kim Sun-young doesn’t just act; she inhabits. Every sigh, every flicker of pain across her face, every pause before she speaks lands with a gravity that forces you to sit in that uncomfortable, heartbreaking space. It’s the kind of scene that doesn’t just move the story forward, it rearranges you emotionally as a viewer.

Jang Young-nam as Kim Ok-hee, the twins’ mother, was another standout, not because she was warm or nurturing, but because she embodied a kind of broken honesty that most dramas shy away from. One of the most gutting scenes comes when she finally admits, with the gentle push of Ho-su’s mother, that she never felt worthy of love from her own mother (the twin’s grandmother), and because of that, she’s never known how to be a mother herself. It was a revelation that cut deep, especially when she confessed that she couldn’t even tell her own twins apart when they were young. Watching her break under the weight of that inadequacy was painful, but what made it truly unforgettable was the way Ho-su’s mother quietly reminded her that perhaps the first step to being loved is learning how to love. It wasn’t some grand, melodramatic revelation, it was two old high school friends, both mothers, sitting in their raw truth about how impossibly hard it can be to raise children while carrying your own scars. That scene didn’t just add depth to her character; it reframed the whole intergenerational trauma of the drama in one intimate, heartbreaking exchange.

Cha Mi-kyung as Kang Wol-soon, the twins’ grandmother, provides the counterbalance to all that generational fracture while hiding her own trauma. She’s the anchor, the tether that kept Mi-ji from fully breaking apart during her darkest moments. In lesser hands, the grandmother role might’ve been just the “wise elder with warm soup and tired proverbs.” But Cha Mi-kyung imbues her with such resilience and grounded strength that she feels less like a stock figure and more like the last bastion of love in a family scarred by absence. She’s flawed, yes, but her presence is steady, and you can feel how desperately Mi-ji clings to that steadiness. The way Cha Mi-kyung delivers even the simplest lines, softly but firmly, wraps around the viewer like a blanket stitched out of both tenderness and grief.

If Our Unwritten Seoul has one glaring flaw, it’s how it mishandled episode 11. Up until that point, the drama had been a masterclass in pacing its emotional blows – every scene landed like a surgical strike, clean, precise, and devastating when it needed to be. But then came the decision to escalate Ho-su’s trauma with his mother so close to the end. And that, for me, was where the whole thing buckled.

Here’s my problem with dropping fresh trauma at episode 11 of a 12-episode run: I’m already spent. The earlier episodes had been so good at threading quiet devastation and tenderness that by the time this “new big emotional reveal” came along, I wasn’t shocked or gutted, I was numb. Not because I didn’t care about Ho-su. Not because the acting was lacking (it was excellent). But because the drama had already overdrawn my emotional account so early in the story. That moment was like the writer handing me one more glass of whiskey after I’d already blacked out at the table. I couldn’t register it. My system had shut down.

It’s not that the subject matter wasn’t moving, it’s that the drama didn’t leave space for it to land. A truly healing drama like this needed its final act to feel like a decrescendo, not another crescendo. The earlier episodes had already wrung us dry with cathartic sadness, grief, and flashes of warmth. By episode 11, what I needed was a gentle descent, a slow unwinding of threads, a soft reminder that even after pain, people find ways to live. Instead, I got a sharp spike, a wrenching escalation that broke the rhythm.

The result? The finale felt uneven. Instead of holding me in its arms all the way to the last note, the show left me watching from behind an emotional glass wall, unmoved where I should have been undone. And that’s the tragedy, because Our Unwritten Seoul was strong enough that it didn’t need that extra push. It could have let me go with warmth, not exhaustion.

The second flaw? Han Se-jin. Was he really necessary?

The problem wasn’t the character design. On paper, Han Se-jin’s goofy, soft-edged charm is exactly the kind of energy that could’ve thawed Mi-rae’s ice. The issue was Ryu Kyung-soo’s casting. He simply couldn’t inhabit that playfulness convincingly within Unwritten Seoul’s carefully muted register. His performance felt forced, like he was reaching for “quirky and lovable” but landing on “awkwardly out of place.” It’s the kind of tonal dissonance that pulls you out of the story rather than weaving you deeper into it. Imagine casting Jet Li to play Mulan, not because Jet Li isn’t immensely talented, but because no matter how hard he tries, the role just doesn’t sit in his wheelhouse. That’s how Se-jin’s scenes felt: mismatched, misaligned, and tonally disruptive. Next to Jin-young’s Ho-su, who delivered restrained nuance at every turn, Se-jin felt like an intrusion.

This left me asking the bigger question: did Mi-rae even need a love interest at all? My answer, bluntly, is no. Her arc wasn’t one that required romance to feel complete. Mi-rae’s journey was about survival, healing, and slowly re-learning how to open her heart to family and to life itself. By forcing a half-baked romance subplot, the writers not only wasted precious screen time, they also cheapened her growth. What could have been a story of a woman reclaiming herself and her agencies became cluttered by an unnecessary distraction.

In the end, Se-jin didn’t balance Mi-rae. He blurred her, he diluted her. And that, more than anything, felt like a betrayal of what Mi-rae deserved.

At its best, Our Unwritten Seoul was a devastatingly beautiful exploration of love, family, identity, and the quiet wars we wage with ourselves. For the first 10 episodes, it soared, driven by Park Bo-young’s once-in-a-generation performance and supported by stellar writing, OST, and side characters. It could’ve been my third ever Perfect 10 drama. Instead, a late-game stumble knocked it down a peg.

But twelve episodes is a tight canvas, and the last-minute stumble -miscasting, tonal misalignment, and pacing that faltered just when it needed discipline – dragged the finish line out of reach. Instead of perfection, we got brilliance with an asterisk.

Still, don’t let that stop you. This is a must-watch. Not just because Park Bo-young performs like a woman possessed, but because beneath the fumble lies one of the most poignant explorations of love, family, and identity I’ve seen in years. It’s an emotional gauntlet, yes, but also a rewarding story about endurance, healing, and the complicated bonds of family
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