Our Unwritten Seoul is a South Korean series of character drama with some romance and running 12 hour-plus long episodes. Park Bo-Young plays twin sisters Yoo Mi-ji and Mi-rae (Lee Jae-in plays the teen version in the many flashback scenes) who grew up in a small seaside town a couple of hours drive from Seoul with their single mother (played by Jang Young-nam, and grandmother.

Mi-ji was the popular athlete and Mi-rae the shy intellectual and not even their mom could tell them apart. Mi-rae was a sickly child and has health problems even today. Mi-ji suffered a traumatic ankle injury that ended her athletic career and sent her into three years where she didn't leave her bedroom (although it wasn't a small space -- an ante-room which is like a normal bed-room size and an attached bedroom area maybe half a bedroom size or large walk-in closet area).

Now they're adults. Mi-rae works at a public finance company in Seoul. Mi-ji lives with mom and is a cheerful temp-worker doing odd jobs all over town.They live separate lives and almost never talk to each other.

Mi-ji finally visits Mi-rae in Seoul and all seems well but Mi-rae is acting odd. Later that night as Mi-ji is waiting at the bus stop for her ride back home things Mi-rae said click together and Mi-ji rushes back and stop Mi-rae from jumping out her balcony in order to be injured enough to miss work for a few weeks. Turns out Mi-rae has been shunned and bullied for months by her co-workers because she spoke up about other bullying.

Mi-ji's solution is to switch places with Mi-rae, something they did often as kids and teens. Mi-rae can go home and live a simple life while Mi-ji just kind of holds her place for a few weeks. But once Mi-ji is at the office she can't help but kind of fight back a bit and be more involved in work and is soon in charge of a vital task that is also a trap to push Mi-rae out of the company. Also secrets are slowly revealed because Mi-rae did not tell Mi-ji the real reason she became an outcast at work.

The primary romance is Mi-ji and childhood friend Lee Ho-soo (played by Park Jin-young as an adult and Park Yoon-ho as a teen). He was the new kid in school and had a secret disability (survived a car accident that killed his father and left his body a wreck). In school Mi-ji liked Ho-soo but it seemed Ho-soo and Mi-rae were a thing (which later on we find out wasn't the case but as often happens characters infer the wrong things without ever talking and asking directly). Now he's a lawyer in Seoul who runs into Mi-ji as Mi-rae and keeps running into her.

Meanwhile a secondary romance is Mi-rae back at home. She takes a temp job working at a strawberry farm and befriends owner Han Se-jin (Ryu Kyung-soo) who is a bit eccentric because he's a former finance guy who inherited his grandfathers farm and wants to make it work in honor of his grandfather. This romance is less complicated and a nice contrast to the other one which is rather twisty.

The first episode wasn't that great as they establish the characters. But with only 12 episodes it does pick up quickly and does become very interesting. With the estranged twins switching places they learn secrets about each other and understand each other better. They both have mental issues to resolve so that they can grow as adults. Park Bo-young does a great job playing twins. Both act a little different though much the same.

Overall one of the better K-dramas and I quite enjoyed it. A little more serious than usual but still with a good romantic subplot.