Summary: If you haven't already, watch this drama. Can we just take a moment to acknowledge Kim Eun-sook's wonderful storytelling. And a standing O for the cast and all the production crew for their hard work! +/- Plot: Hardly have I ever encountered a drama that has required me to think outside of the box when looking for the plot twists and trying to theorize about the backstory and characteristics of a character. The story as a whole was unexpectedly thrilling and as the weeks continued through, more questions erupted--but never in a way that left me utterly confused and unsatisfied. I loved how we slowly came to fully understand how the characters were previously connected and such. I will say however, that midway through I slightly lost some interest as there wasn't much romance development. But it was understandably adorable as I assume they wanted to play up the innocence factor, it being a "first love" and all. The only reason I gave the storyline a 9.5 was because there's no option for a 9.8 and I wanted to give a more honest rating. I was not in love with the ending of the show, to be perfectly honest I would have been over the moon with episode 15 being the final episode. I just felt that the final episode was a little ??, although looking back on it I realize that it was kind of a nice touch for the final character development of Ji Eun-Tak. +/- Acting/Cast: I felt as though the cast as a whole had such great chemistry, everyone just seemed to mesh together so well and all seemed so at ease and comfortable in their characters. It's something that's pretty uncommon I'd say. It was heartwarming to see the fun times that the cast shared behind the scenes and how they're so at ease especially throughout their ad-libbing sections. The sizzle between Kim Go-Eun and Gong Yoo is undeniable! It's like a needle in a haystack when you find kisses this good in the copious amounts of dramas produced. I'm happy to say that it's getting better though! But back to the actors, Kim Go-Eun really sparkled in this roll. She had the perfect amount of innocence as the school girl and maturity as the character grew up. And I'll try to contain my fangirling, but we all know that Gong Yoo has stolen every girl and woman's heart. He is both wonderfully intense as the Goryeo Man and soooo adorable in his first love. My goodness, that bromance though. It was sweet to see how we saw the brotherhood grow deeper as they grew more fond of one another. Not only was the chemistry and witty banter between Gong Yoo and Lee Dong Wook amazing, but the extra comical effect of Yook Sungjae made everything perfection. I really hope to see them working together in the future! (If you haven't seen Gong Yoo and Lee Dong Wook's amazing spoofs of the cover artwork, you definitely should--so cute!) And a special shout out to the beautiful Yoo In-Ha, so much beauty, charisma, and sass packed into her character. She was even more comical than I expected and it totally worked...also unexpected. +/- Music: All of the music was perfectly interwoven with the filmography! I couldn't believe my eyes and ears when Gong Yoo and Lee Dong Wook came strutting down the dark road, it was just pure matrimony. I am a huge fan of the soundtrack and have been listening to it on repeat for at least 2-3 days straight. My favorite song from the album changes from day to day, so that tells you that all of it is simply amazing.