When i say "mature" i mean that the characters didnt act like children, arguing without listening and crying every minute. That can get old quick. There wasnt any of the normal "misunderstandings" that isnt cleared up until the end. There wasn't a rabbit chick after him, using every underhanded trick to get him. No mental breakdowns that caused a year(s) break up.
The only complaint is that there shouldn't have been a second male lead. Poor thing was domed from the start.
This show is about a woman that meets a man. Man and woman has prior disagreement and dislikes each other. Their get together isnt realistic, but when they do, you can see that they can last. They are easy going and flows with it.
My favorite part of the show are the characters and how much they grow to trust one another. I especially like thst he isnt the greatest at everything. She laughs at him a lot and poke fun at him just like a real person would. Even the supporting roles were mature and realistic (maybe not the owner of the museum)

He doent save her from a robbery or a knife fight but he helps her to be able to join her two worlds and live comfortably. He comes with his own issues but i love how she show concerns without juding him. Her asking him to draw her is such a romantic part.
This show was better than expected. To think, I actually jumped it like 10xs. Im glad i finally watched it.