Socially awkward or really bad at socializing herroine

Its me again, and thanks for the recommendations to my other threads. About the topic, I do prefer something that does not feel like they're acting, like they are naturally awkward and not "acting" awkward. Should have good story, something that seems addictive. nothing average (like it seems that I could've watched something better)

I only know:

- Mars (currently watching)

- The Great passage

- Tomdachi no hanashi

- Kimi ni Todoke (did not like the live-action)

1. Yeah, I've read there's nothings special about the live action of sukitte. I've read the manga, watched the anime, and watched the trailer of it haha
2. Cat Street- thanks, but I might read the manga instead due to first review on its MDL page
3. Love Shuffle- Is it like kokoro connect (anime, but haven't watched it)? Thanks, but I kinda feel I won't get addicted to it
4. Flower Boy Next Door- I actually tried watching it awhile ago, it was adorable. I also like the female actress hehe. But, I get really turned off the 'surgeries-actors and actresses' I AM SO SORRY but I think a lot of koreans are beautiful and do not need to undergo the knife. But I think it will be a show that I woukd not regret on watching

I second Flower Boy Next Door, even though I never finished it (I'm not a great fan of the male lead)

I really enjoyed a taiwanese drama called ToGetHer, although it wasn't to everybody's taste, mainly because many thought the female lead had no backbone. To me she came across as a strong character in an understated way, and yet at the same time she could be vulnerable and emotional. She's a real introvert and only really talks to three people throughout the drama, but those she talked to were the ones she truly cared about. The male lead, Mars, is a disgraced star desperate for recognition and appreciation (typical opposites attract setup). I ended up liking him a lot though, because he cares so much about her and helps her as much as he can. His behaviour with her was very different than with other people: unlike his usually obnoxious attention-seeking star attitude, with her he was always gentle, quiet, mindful, insecure about himself yet determined to help her. And at the same time, she's the one that helps him the most. 

Agree w/ Heart to Heart. It's fantastic.

Keizoku 2: SPEC

Soredemo Ikite Yuku. The heroine and hero are socially stunted from a childhood tragedy. 

Your description is perfectly suited to the drama 'High School King of Savvy'. Lee Ha Na who plays the female lead is so socially awkward, it was painful to watch at time- like the time when she was in the car with her boss and was sweating so bad and he saw it hahahha urgh 

I just finished The Rose & the heroine is quite socially awkward in it. Maybe you'll find it interesting. Does cover some taboo subjects though, so depends if you mind that or not.

I know you said Cat Street, Love Shuffle & Flower Boy Next Door didn't really appeal but all 3 are really good & addictive. They definitely would suit your criteria.