If I can sum up this how it would be "one hot mess". I don't know who wrote such an appalling script and cast an over actor as the main FL but they did and they should never do it again.
The series started out with the world"s most annoying woman being utterly ridiculous, with a spray that sent Siwon into "OMG I WILL NEED TO HIDE FROM EVERYONE", to that little weird storyline disappearing without a trace.
The mid section dragged on for a pointless eternity (the only good part was the cameo with Leetuk and Shindong) and I found myself so annoyed by the FL that I realised I had spent a whole episode with my face in my iPad than on the tv.
I suffered until the end because of sheer determination and thank the Good Lord the woman stopped shrieking like a crazy woman finally in the last episode and became somewhat a normal human being.
Points to note: wasp stings do not put you into hospital unless they get you a zillion times. Calling an ambulance was just bizarre. They also don't require a giant plaster and she'd be writhing in agony from just the one, not googly eyeing him.
Also, if he tells you to GET LOST half a zillion times, he does not want you and his feelings will never change. EVER. I've never seen cling wrap that clingy.
Watch it if you like hysterical screeching & stupid women, or for Siwon. He's cute.