I hate cliche dramas but this one is a bit different since the second male lead turns out to be the main female lead's half brother and he still has feelings for her. The writers were feeling kinky?
His other movie, he sleeps with and marries his half brother. (It is a very good BL, I recommend it.) ? He has a luck of being in relationships with his half siblings I guess. ?
In all seriousness, it is cute, sometimes serious, sometimes funny, but worth watching once since it's interesting.

I can definetely sense BL aroma from the two male leads. I cried a little when the FL's half brother was sad about her being his half sister and asked to have one last meal with her before she left, but she didn't even go and then her half brother died in the ML's arms after a car crashed on him.
The driver was his ex wife.