https://kdramadiary.com/feature/korean-dramas-about-writers/

Oh... recommended Kdramas featured writers aside from Yumi's Cells are... Romance Is a Bonus Book, Chicago Typewriter, Oh! Master, It's Okay That's Love, oldie Full House, How to Be Thirty, The King of Dramas and sageuk Rookie Historian Goo Hae Ryung

I hope this two here helps. It only highlights what they did so you might not really see the how when you watch it.

1. Because This is My First Life - Yoon Jiho didn't exactly experience writer's block, but she found inspiration flowing in whenever she's handling chores around the house. The words just come in and they fall just in the right place.
P.S : It's just one scene in BTLIMF, so ...

2. Oh! Master : Han Bi-soo. His block stemmed from a change in location. So if you could try writing at a different number of places, perhaps one of those places could help your writing persona come to the fore when you need it.

Mother of mine it was a weekender from 2019 so its 108 episodes long! There was a writer who published an acclaimed piece but was unable to get her next book completed. There are a number of episodes about how various strategies are put into place to help her and I think her friend was connected to dramas he was successful in his role.

The male lead in In Need of Romance 2012 (I Need Romance 2) is a writer, and him dealing with finding inspiration/feeling blocked is a big part of some episodes. As a writer myself I found it relatable.

Ki Hoon in My Ajusshi had screenwriter's block for years due to lack of self-confidence. Not to discourage you though! He did start up again eventually, inspired by his own crazy experience and the continued belief in him by his girl. Pighting!

Any dramas featuring composers?

Run-on comes to mind. The FL is a translator and not a writer in the strictest sense, but she struggles with finding the right words to convey certain thoughts and emotions when she's adding subtitles to films. I also think that drama exhibits a general love of both written and verbal communication, as well as exploring how we can sometimes flub both of them.

Romance is a Bonus Book and Chicago Typewriter also feature writers and in the case of the first, there's a realistic and yet idealized depiction of the publishing world as well. Both dramas show a deep love of books and respect for writers.

Maybe My Liberation Notes would be a helpful, even if they're not actual writers.

Chicago Typewriter would be my recommendation. For a show so focused on its historical and supernatural elements, it still has a surprisingly powerful story beat throughout on writers and the power of stories. There’s a deep love and appreciation of literature embedded within the narrative. After all, the title literally has the word “typewriter” in it.

And yes, the protagonist is a writer. No list of kdrama authors would be complete without the one and only Seo Hwi-young. And Han Se-joo as well.

Chicago Typewriter is a given and also Scripting Your Destiny is a favorite of mine. But Moonlight, It's okay to Not Be Okay and Melo is My Nature are also good dramas that feature writers.

Although there are a lot of dramas that come to mind that has leads as budding or not-so-successful writers, but the one drama that comes to mind when that specifically depicted Writer's block would be Temperature of Love (2017) especially in the 1st half.

Jo Yeo Jeong is a mystery writer in CHEAT ON ME IF YOU CAN. To get over any writer's block, she thinks about ways to kill her husband if he cheats on her. Not recommended for real aspiring writers.

These don't answer the question. I was just reminded of them and made myself laugh.

In 365 Days, Repeat the Year, the FL is a manga writer. She travels back in time amd gets bored because she has to draw everything again!

In W the FL's father is a manga writer who puts things in the story carelessly and has to answer for it later!

Temperature of Love. The FL is a drama writer. ML is a chef. This show had my name on it, but an obnoxious mother derailed me.

If all dramas are written by a writer doesn't that mean all dramas feature writers and writing? 🤔😂

The Romance of Tiger and Rose: The FL is a script writer who becomes trapped in her own badly written drama, and comes to greatly regret her poor story choices. Her “writing conferences” with the professional storytellers and the fruits are LOL funny.

Can we include "w the two worlds"? The FL stuck in a novel.
Forcasting love and weather, This one had a side character who met his love through illustrating her book about pinguins, which was cute