FL who sort of feels like she has lived life a couple of times and has a laid back attitude and is somewhat lazy/unconcerned about most things. 

 kwoon:
FL who sort of feels like she has lived life a couple of times and has a laid back attitude and is somewhat lazy/unconcerned about most things. 
  • Hotel del Luna - FL is cursed with immortality and has become vain / lazy / unconcerned about most things. I wouldn't describe her as particularly wise or mature. 
  • My Mister - FL feels like she has already lived through several lifetimes' worth of hardship at a young age. She distances herself from other people and is not concerned about maintaining pretences or social niceties. She isn't lazy and is actually a very hard worker in the sense that she works two (sort of three) jobs and looks after her grandmother, but at the same time she's clear on her priorities. Her main job is a temp hire position. She does the work she's supposed to do, but isn't concerned about looking like a hard worker / going the extra mile / sucking up to her senior colleagues. In some ways she's mature beyond her years and also very clever / street smart, and in some ways she's a little naive because she basically raised herself and didn't have anyone to teach her certain things.

"Mature / Wise FL" who sort of feels like she has lived life a couple of times:

  • Misty - The FL is mature, smart, ambitious and confident. She has come a long way from where she started (as if her childhood was a different life). She cares a great deal about her career and her work and definitely isn't lazy, but in some ways she could be described as laid back / unconcerned. It's generally difficult to shake her confidence and focus (especially when she's in her element at work). Her attitude is usually defined by her confidence / arrogance / not worrying about playing nice or concerning herself with other peoples' petty problems or opinions.

https://mydramalist.com/16547-eternal-love  in the second half of the show, she's laid back and lazy indeed. 

https://mydramalist.com/29515-lub-luang-jai very mature, wise and calm. A bit boring to be honest. .. 

https://mydramalist.com/209-summers-desire after the first 3 episodes she becomes laid back but not lazy. 

https://mydramalist.com/19234-the-bride-of-habaek laid back and lazy, but not mature.  More like tired.

https://mydramalist.com/23442-the-happy-loner

https://mydramalist.com/6756-the-masters-sun she's not lazy but she's lost her ambition and her pride. Basically nothing ever bothers her. 

https://mydramalist.com/29133-witch-s-love she's immortal, no ambition and happy with her life. 

https://mydramalist.com/21354-liang-sheng-can-we-not-be-laden-with-grief she's lazy and detached for the most part. But not mature at all, more like a big baby 

https://mydramalist.com/11582-heart-to-heart she's a bit like this, even though she has problems. 

https://mydramalist.com/6993-i-hear-your-voice at the beginning