First of all, there is no chemistry between the main characters.
I didn't like acting of Park Seo Joon in this one. There was no emotion in his eyes. Both of the main leads felt so fake, with fake smiles and awkward movements.
The unrealistic and cheesy childhood trauma story was annoying.
There was too much sugarness. And when I say too much, it means that the main lead literally said how much he loves her and treasures her every two minutes and all he cared about was this girl in every situation, even though he was supposed to be a busy person.... It all looked like a fairytale for kids - very tiring, and even worse accompanied by his fake acting. It felt like he was so tired himself saying all these stupid things from the scenario.
Now for the good parts.
I really liked the side characters in this drama. They all were so cute and funny, I absolutely adore acting of them all.
Also I liked the hot moments between the main leads. Made me fangirl like crazy.
Also thank God there were not much complications and misunderstandings, which is nice. Saved me the nerves.
Would probably rewatch for the bright and cute atmosphere.
7/10