Our Unwritten Seoul offers a tender, introspective twist on the classic identity-swap story, inviting viewers into the emotionally complex lives of two sisters rediscovering themselves by trading places. With Park Bo-young’s stunning dual performance at its heart and a script that leans into quiet revelations over melodramatic flair, the series paints a poignant portrait of what it means to lose yourself—and then find a truer version in the most unexpected way.

Review
Our Unwritten Seoul is a heartfelt romantic drama with a compelling dual‑identity twist, driven by Park Bo‑young’s extraordinary four‑in‑one performance. The story centers on twins Yoo Mi‑ji and Yoo Mi‑rae—one a free‑spirited former athlete living in rural Duson‑ri, and the other, a high‑achieving perfectionist in Seoul. Feeling emotionally adrift—Mi‑ji after her sports career, and Mi‑rae under corporate and societal pressure—the sisters reconnect and decide to swap lives, hoping this experiment will help them rediscover themselves .
Park Bo‑young’s challenge of playing both sisters, plus each twin pretending to be the other, showcases her acting range in four subtly distinct personas. As the optimistic, blonde‑haired Mi‑ji, she radiates energy and resilience. As the controlled, internally worn Mi‑rae, her portrayal is nuanced and emotionally tense. Her ability to bring out the differences—through posture, expression, and tone—makes it easy to forget it's the same actress.
The narrative moves beyond typical identity-swap tropes. Under writer Lee Kang’s thoughtful script, themes of self-doubt, sibling bonds, and the wistful longing for someone else’s life are explored with sincerity. The contrasting settings—bucolic Duson‑ri and bustling Seoul—are portrayed not just as physical locations but as emotional states, reflecting how each sister perceives and is affected by her environment.
Supporting characters enrich the journey: Park Jin‑young’s Lee Ho‑soo is a gentle, perceptive lawyer who forms emotional connections with the twins, potentially more than one realizes. Ryu Kyung‑soo’s Han Se‑jin, a strawberry‑farm owner encountered by Mi‑ji, introduces gentle romance and subtle warmth.
The series balances introspection with emotional beats. It doesn't rely on big, dramatic moments; instead, its quiet, everyday interactions—shared memories, awkward adjustments, tender confessions—drive the emotional core. There’s also a gentle intrigue: viewers are kept guessing if and when secondary characters will realize the swap.
If there’s a flaw, it may be pacing. The 70‑minute format allows depth, but a slower build might test those expecting faster plot twists. Yet, this deliberate pacing gives space for authentic character growth and emotional payoffs.
Our Unwritten Seoul is a beautifully tender exploration of identity, family, and the longing to be seen and understood. Park Bo‑young delivers a career-highlight performance, supported by a carefully observed world of contrasts. If you appreciate character-driven narratives and emotional realism, this drama offers a soulful and resonant viewing experience.
Information
Our Unwritten Seoul (Korean title: 미지의 서울) is a 2025 South Korean coming-of-age romantic drama directed by Park Shin‑woo, written by Lee Kang, and developed by Studio Dragon in co-production with Monster Union, Higround, and Next Scene. The series premiered on tvN on May 24, 2025, airing Saturdays and Sundays at 9:20 PM KST, and spans one season of 12 episodes (approx. 70 minutes each). Starring Park Bo‑young in a dual role as twin sisters Yoo Mi‑ji and Yoo Mi‑rae, alongside Park Jin‑young and Ryu Kyung‑soo. The series also streams globally on Netflix.
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