The drama is an adaption from the Korean Drama I hear your voice.

They have a similar storyline but parts of the show key points have been changed. The intensity of this drama is not as strong as the Korean one. I find that they focused more on the romance than the revenge or the cases.

I may have only watched till episode 32 but I think that's the last episode, watch it to find out the reason why.

The music of this drama matches well.

I must say the main actor Jin Han does look older when he wears the suit but he looks like a university student when he wears the hoodie. As for the main actress, she does look a bit way to old when both actors act scenes together. Looks aside the actress acted really well!! As for the actor, there are some points that need improvement but other than that he did well too!

The killer in this drama did not make me feel scared unlike the Korean one, could be because his acting wasn't strong enough.

The story is a little fast-paced, it's like they were rushing for an ending.

Overall, this drama is not bad, I would suggest you give it a try. Honestly, I would still prefer the Korean one as when the killer shows up it really gave me the goosebumps.