Well, this has gotta be the lowest rating I have given a drama so far.
Although I was really excited for it in the begining, it was only a dragging-through and skipping-scenes in the end.

Story:
The synopsis sounded quite alright, eventhough I am not a huge fan of fantasy elements. Now the fantasy element here was that Oh Soo could see the aura of people and thereby understand how they feel. He could then mix something in their drink to soothe or intesify this feeling. Ok, ok, whatever. I was more interested in the romance from the very start, and yes, there was romance. And no, it wasn't fluffy or cute or anything in my opinion. There was no chemistry between the main leads.
Also all this aura-seeing, the mysterious tree and the whole family & friends background stories seemed to just be there, so there was SOMETHING. The stories didn't connect in my opinion the way the writer had probably planned them to. Seriously, what did the tree had to do with his ability to see things? Was the powder maybe extracted from the flowers on the tree? If so, I really missed the part where that was explained.

Acting/Cast:
I was excited for Kim So Eun as I really like her acting. And her acting was really good, as well as Lee Jong Hyun's, but the characters were just meh. Yoo Ri was sometimes really annoying and not funny at all. It was cringeworthy. Oh Soo was totally shy and a stuck up in the beginning and then suddenly he was the obsessive boyfriend (really, there was no development, it just suddenly happened).

Music:
I don't recall any songs from the drama, which means there was some music, but it wasn't good enough to let me think "Oh, this drama's music was great!"


Rewatch Value:
No.

Overall:
I can't find a single reason why someone should watch this, so don't. The story was all over the place and the characters had a poor development, if there even was some. Just no.