It is sooo hard to write a review about this show. Because I loved several things about it but, at the same time, it has so many flaws really impossible to ignore.

PROS
The cast is AMAZING. Lee Sung Kyung and Lee Seong Yoon are perfect in their roles, they have lot of chemistry and, let's face it, they're both so beautiful that just staring at them is fine. The ensemble cast is really, really good too.

The premise is very good and interesting, albeit sad, yet it manages to be funny.

Lovely OST, I specially loved the two main songs "Yesterday" and "Amazing Thing". Mika hopes to become a musical actress , therefore Lee Sang Kyung sings too: I am really impressed by her beautiful voice.

CONS
After a few, very promising episodes, you will slowly realize that the writers of this show have basically no idea of what they're doing. A show that, regardless of its sad premise, managed to be quite funny at the same time, suddenly becomes a tearjerker device: not only Choi Mika's life is about to end, but also the lives of almost everyone she runs into (Lee Do Ha's brother, her actress colleague, her mentor's boyfriend, Lee Do Ha's obsessed ex fiancée): seriously, how many people are supposed to die here, just because the story needs to produce 16 episodes? At the beginning I cried for certain scenes, but later everything was just too ridiculous to be sad.

Many episodes were just repeatedly stating the same concept on and on: Mika will die, but she gains time by sucking Lee Do Ha's time, hence she's so noble that she'd rather die than telling him the truth, and she starts telling lies over lies that shatter his heart in pieces in order to save him. This is what happens in... probably 10 out of 16 episodes. Over and over again. No progression. And, in the end, a very convenient "miracle" gives us the long-awaited happy ending without any real logic explanation. I know it's a fantasy, but I still appreciate some effort from the writers in giving an appropriate resolution and, possibly, with no loose ends. This is NOT what happens here. Which makes anyone's suspension of disbelief basically impossible.

I am really disappointed. With such a great cast and good premise, this show had all the requirements to become a real cult and one of the best. But it wastes its amazing potential along the way and it even looks like who wrote it don't even really care about it. Like: "This is how it ends: it doesn't make much sense, but you'll have to accept it anyway because we're too lazy to put some thought into it". Bummer.