Our Unwritten Seoul — Characters & Cast

Initially motivated to shield her twin sister from catastrophe, her motivation evolves into pursuing her own self-worth and establishing genuine, unmasked love.

Begins as an underemployed former sprint prodigy concealing her lingering grief behind cheerful energy. When she assumes Mi-rae's corporate identity in Seoul, she learns that vulnerability is not weakness, ultimately reclaiming her agency and choosing a career and romantic life aligned with her true voice.

Initially motivated by survival and escape from overwhelming workplace trauma, evolving into discovering genuine self-acceptance and familial peace.

Starts as a perfectionist office worker suffocated by corporate obligations, leading to emotional collapse. Taking over Mi-ji's low-stakes, communal existence allows her to dismantle her people-pleasing tendencies and embrace a self-determined lifestyle without external validation.

Initially driven by self-preservation and emotional detachment, shifting toward seeking authentic connection and defending personal integrity.

A composed, guarded lawyer who operates like an observer of his own life due to childhood trauma and workplace cynicism. Meeting Mi-ji (disguised as Mi-rae) destabilizes his controlled exterior, teaching him to express grief, stand against internal corporate wrongdoing, and open his heart.

Driven by the desire to cultivate an honest, sustainable life and offer comfort to those battered by the city.

A sincere, hard-working farm owner who chose a pastoral livelihood over urban ambition. His steady presence provides Mi-rae with safety, helping her heal while he navigates his own romantic feelings without imposing pressure.

Evolves from anxious maternal control to learning how to support her adult daughters with understanding and humility.

The twin sisters' mother whose maternal anxieties and past choices contributed to the sisters' emotional burdens. Over the course of the drama, she confronts her shortcomings and builds open communication with both daughters.