Started off very well, then started becoming pretty ordinary and maintained that.

Plot and characters: The first few eps were interesting, explained the base of the story, gave good laugh at times but that was soon gone.
Felt boring and draggy at times. Didn't really need 30 eps, could've done in 24.
There was no chemistry. But i understand why they started to like each other. The ML's split identity was the FL's idol, the fl was really kind to the ml. The sfl was pretty, good natured and wise, the sml was honest, good and dedicated to the sfl.
I liked the SFL more than the FL. She was actually calm, smart and not a bitchy princess, rather a good person.
I felt the FL to be annoying. She was supposed to be strong but in fights she is a useless burden to the ml. She is too noisy, super dumb and being a street person she has no complexity in her character. Her character is pretty flat and simple.
And that SFL's maid. Ugh. Like you don't even know where your mistress is but clearly know that she wanted to run away. Why bother trying to separate the ml and fl?
The ML is like really handsome but his acting isn't too good, just average.
The SML is pretty damn cute, he is a good guy in a bad place. I liked his dedication to the sfl.
What's up with the ML's dad? Why so violent and horrible? Ugh.
Nan Batian was a freaking pedophile and a vile and disgusting character. Eww.
What kept me going is the plot. I wanted to know what exactly was up with Situ Lin, the ML's mother mystery and how the 2nd couple will stay together. The plot was itself engaging but had too many unnecessary expansions. The worst part is that there is no character growth in any of them.

Music and production: production was okay, nothing amazing about it. The music was very good, i liked it a lot.

Okay for a one time watch, with going easy on the 2x button for people who got high standards for a drama.
If you're new to it, sure go ahead, you'll enjoy it.