At first the drama has a very interesting plot.. but for some reasons, it's kinda inconsistent with too many additional characters and unnecessary situations that kinda ruin the focus of the story about the sleepless girl and her secret animal transformation. I wish to see a lot of her transformation scenes but too bad it just some side story. There's a lot of misunderstanding between couple and some reasons are quite silly and make it too draggy. However.. It's getting more interesting in the second half of the drama when the male lead is finally find about the death of his brother that related with the female lead. Trust me..just watch till episode 25 and after (especially episode 29-31).. it's not boring anymore! It's totally make your eyes teary and make your heart broken because of the couple's fate! The drama is getting back to its original interesting plot! It's a plot twist in the later part. I feel excited when they give us some unexpected truths and lies.

The last battle with the main enemy is kinda too easy after a long wait, and tiring attack-escape events in the long run.

I love both main leads acting as well. Their heartbreaking tears really capturing my heart. The female lead is very cute and naughty, but she is not annoying. The male lead is totally admirable.

Overall.. this drama is good.. you just need to skip some unecessary parts, especially in the first half of drama ;)
I'm so glad this drama give us an alternate ending (the special episode). It's very sweet!