I've been in the mood for a Noona series so I picked this up on the recommendations from others, and I have to say it's definitely a fun watch.  But...
How long and to what extent does the romance develop between the leads?  While there have been hints of it (I'm on ep8), I'm not all that impressed with their chemistry, owing mostly to the male MC - it's not bad by any means, though.  So...I'm not sure if I want to watch 14 more hours of filler if the "payoff" is...a hug.  Honestly, I find the 2nd leads more compelling in that department.  

Also, if there are other Noona romances you'd highly recommend I'm all ears.

[Edit: It took some patience but I'm really digging D.S., esp the side characters, and Dalja of course]

Thanks
Keep watching it .. it does get better as it goes on. I rated it an 8.5 so must have been lacking something during it but i can't remember it being a terrible watch. I do like Lee Min Ki though so maybe that did it for me haha.

As for noona romances; Witches Romance, Secret Love Affair, Oh! My Lady are all good. There is a noona romance in one more happy ending but it's not the focus of the story but the rest is good :-)
Turned out I was only on ep6 and now at 10 I'm hooked lol.  Something about this I really like.

Thnx
witch's romance, king of high school savy and i hear your voice are great noona romances.
I may be biased bc im lee min ki bias but i remember i really enjoyed it.sure,it has some cliches but it is more mature than most dramas.
I remember I started watching it because of the movie, and it didn't disappoint. It's one of the few drama that looks realistic and mature enough to stand out among the other fanservice romances (I think it was the first time I ever saw even the mentioning of abortion in a drama). It's kinda slow to develop (I still think 22 eps were too much) but I liked how it all paned out in the end.