I do indicate what kind of growth this is about but no spoiler.
The do-over dramas
20 again : The FL
Familiar Wife : The ML
18 Again : The FL and the ML
Go Back Couple : The FL and the ML. By ricochet every other character.
Other dramas
We Best Love: No. 1 For You : Discovery of sexual orientation for one ML
https://mydramalist.com/32555-tharntype-the-series: From homophobe to out of the closet.
King2Hearts : The ML. From an incompetent coward to a hero.
The Suspicious Housekeeper : This takes the prize. No romance in this but talk about personal growth. Every single character grows tremendously.
Heart to Heart : About mental health.
Fated to Love You : The FL gains confidence.
Weightlifting Fairy Kim Bok Joo : Coming of age story.
The Master's Sun : The FL tames her fears.
Flower of Evil : Strong contender for the prize. The ML grows tremendously. Also a few troubled souls find peace.
Get Karl! Oh Soo Jung: Both the FL and the ML.
The Good Wife (K-version): The FL, but it's not as impressive as the J version
The Good Wife (J version): Here we see much more growth for the FL and another character.
Love Is Sweet : The FL in a professional sense mostly.
Mia 2018 : The FL mostly and also a few other characters.
Go Ho's Starry Night : This is a short and sweet drama. It's so worth it. To me it's all about managing expectations and going beyond the surface.
High School King of Savvy : Yep, the three main characters do learn a lot in this.
Honey : The FL and there's a huge, giant but sweet metaphore at the end.
Queen of Reversals : Not your run off the mill story. All women should put themselves in the FL shoes.
I Have a Lover : The FL and somewhat the ML.
Que Sera, Sera : All four main leads, but mostly the ML
It's Okay, That's Love : All the characters. This is a show about growth. But mostly the ML.
Jealousy Incarnate : Both characters, but the ML really goes to the school of hard knocks and learn humility haha.
Let's Eat: A show about growth. All characters, except the ML XD
