Run-On is a bit of a mixed bag for me. I was drawn to it because of Shin Se Kyung ? but I couldn't get into it for the first few episodes. It didn't seam like a traditional KDrama and I just didn't get what all the fuss was about. I later realised that it was written as if they were real people and was a genuine love story between our two main leads (Im She Wan as Ki Seon Gyeom). I was frustrated as I felt the dialogue was too slow.
However come around episode 9 or 10 it suddenly came alive and went from good to great. A lot of this was that the second leads story line - that was teased in the first half of the season - came to life. For me this was a great arc and had so much potential. Also the leads were now interacting with each other which further enhanced the story.
If I have a negative it's that this should have happened sooner as there seamed to be a lot of key moments that happened in the last four episodes and maybe they deserved more time to develop if they had been fleshed out earlier on.
I also felt Seon Dan Ah's (Sooyoung) story arc has the most potential in her fight as a woman in a male dominated family business - this was teased but again never really featured much.
Having said that, this was a very satisfying drama. Easy to watch and had a lovely ending. I think if you're new to KDramas or still on the fence, Run On may be a good intro as it's so relatable. Enjoy