It's a good adaptation. But some characters should have a better treatment. And I agreed with people saying the first part of the drama was more interesting than the second part.
Acting/Character :
They succeed to make me like Sakuto as an innocent/childish character and hate him when he was full of himself.
I don't know if it's me or the actress or the acting direction. But I didn't like Haruka I found her emotionless.
Sakuto's friends deserved to have a bit more of exposure.
In general way, romantic storylines didn't make sense.

Music was good but not exceptional.

(Spoiler: stop forgiveness toward relatives who can't be forgiven. It may be the fourth drama where I see it and that pisses me of.)