This started off giving the impression it was going to be a light romcom, but ended up being more of a drama. The funny scenes kind of dwindled away as the story took us on some more serious paths, and the characters developed.

The story got a bit intricate or hectic at times, and since I don't really know anything about dissociative identity disorder or stress disorder, I don't know how accurately it is portrayed in this series. Some of it did seem a bit unrealistic for me, though, adding to my impression of this not really knowing what kind of genre it wanted to be.

The underlying more serious topic in the script seems to be healing - of childhood traumas and insecurities because of appeareances.

The cast is good.
I like Zhao Yi Qin as the ML Shen Yi, although his somewhat aloof persona is a bit similar to another role I have seen him in. I found him a tad bit stronger than FL. Their chemistry was not bland, but not through the roof either – it did shine stronger in a few scenes.
Li Jia Qi is an actress I can't really make my mind up about. As the FL she mostly did a good job portraying Meng Hui. I must say I thought she did a little bit better as the alternate personality though.
From the supporting cast I enjoyed watching Fan Zhi Xin as Sui An.