Overview: 1-6 Episodes [Nothing New]
7 & 8th Episodes [Story Started]
9,10,11th Episodes [Routine]
12th Episode [Perfect Finish]

Likes: 1)One of my favourite concept
2)Final Episode

Dislikes: 1) Direction Problem [Especially For Acting]
2) Writing [Some Logics]
3) First 6 episodes are stretched
4) Already Expected Killer Characterization

Overall: 1)If you're a fan of OCN drama's then definitely watch...
2)If you're a fan of Fantasy/Parallel Dimensions Concept... Then watch it but with low expectations...