This show was one of top recommended show to me , people were going ham around me to watch it, and i have no regrets whatsoever for watching this.
STORY: The first episodes build a great plot and introduce the story well , the flow is great. Somewhere in the middle we realize that there might be plot-holes here and there but that is so perfectly covered with the hilarious comedy scenes for which we should thank the casting gods for casting an amazing set of actors , who fit perfectly into their roles.
and all those people saying that its an unrealistic story- well that's why it comes under "supernatural".
personally i think, You'll be missing out on a great romantic-comedy if you don't watch this show.
And in some later scenes you'll notice the connections to her and the way the lead pictured herself at the start, the call backs and stuff.

ACTING/CAST: I'm telling you for these characters i don't think there can be a better casting, these people ACED their roles and their chemistry is off the charts. Each and every actor did so well and their acting is so so good.

MUSIC: I'd say all the songs are pretty catchy and feel-good and they all fit the drama really really well

REWATCH: YES i will definitely watch a couple more times for its best comedy timing and cute leads

at the end i can say , watching this drama made me fell more in love with park hyung sik and park bo young , I've already been their fan but this drama man just made me fan girl , their chemistry , timing , was just so good. I LOVED WATCHING THIS DRAMA and please do give it a go. i promise you won't regret it one bit.
happy watching.