First of all, this is one of the greatest series I've watched before and to be honest it's been years since I first watch it. Storywise, it's unique and has a lot of colorful stories inside it but since I re-watched it (and maybe because I got older) I felt like the story was to draggy. It could've been just 16 episodes instead of 20 but still it's a masterpiece. The thriller part at the beginning feels too long yet interesting like finding out how things will turn out then the latter part where you'll be torn between SeoJin and Robin. I wonder which side are you. Hmmmmm.

Hyun Bin is such a legend in terms of dual characters. He did it on Secret Garden and here. I can't count how many characters did he bring into life and all of them are unique and just the gaze gives you away who is who. To be honest, I didn't know Han JiMin yet when I first watched this but I've seen her in several works throughout the years and I can say she's really a versatile actress. It's just that her character as Hana here is a bit immature (but not that annoying).

Oh and before I forgot, the OST on this series is also legendary. I can't stop myself from singing along the songs. It's been on my playlist for half a decade and it never gets old.

To be honest, this was one of the really classic series of 2015 and I honestly would recommend it to anyone who is a fan of K-Dramas whether newbie or veteran, this series deserves a spot on everyone's watchlist.