still looking for more short series?
I agree on KBS drama specials, i love those. I actually wrote a series of articles recommending some here on MDL: heres the latest article. My most favourite KBS drama specials are Legendary Lackey, Red Teacher, Socialization, Let Us Meet, Goodbye B1.
As for actual short series
Dear My Name - really great in my opinion. 6 x 10 minutes. Romcom about soulmates
Deux Yeoza - absolutely bizarre series that lives rent free in my mind since i watched it. If i understand it correctly it is series of videos that are promos for online website. its about 2 besties going about their life but nearly communicating together telepatically. 8 x 5 minutes. 2 good seasons, 1 not as good
The Boy Next Door - absoulutely histeric comedy. 15 x 6 min
Semantic Error - BL (=boys love) drama. 8 x 25 minutes.
To My Star - BL drama (honestly there are many BL miniseries of this format lately)
Regular-lengt kdramas with shorter episodes:
Extraordinary You (32 x 30 minutes)
Reply 1997 (16 x 45 minutes)
Suspicious Partner (40 x 30 minutes)
Age of Youth (12 x 45 minutes)
Work Later Drink Now (12 x 60 minutes)
Yumis Cells (14 x 60 minutes BUT every episode is divided into 3 subchapters)