I've watched several cdramas now and this by far is one my favorite
It has all the sweetness and emotions played well by all the different couples.
It has real life issues, complications and playfulness: Harassment, power plays, marriage, sacrifice, motherhood/fatherhood, meaning of family, custody

The female characters are portrayed well with strong character.
The FL character is so strong and able to sacrifice so much for her son and the one she loves
The ML is playful and plays his character well coming from an abandoned background to a wealthy adoptive family overseas.

REally like the BFF of the FL lead and the sister! They were both portrayed well! Strong yet loving!
The son has great lines and says them well! He really steals the show!

And the ending is a good wrap up, not like some of them where the ending leaves feeling jilted or not complete.

Lastly, the scene where they show the other cdrama our FL & ML were in is so comical! Writer has good sense of humor