I wanted to try this drama because I've loved everything else Lee Jong Suk has done, but I have to admit I was a little hesitant when I read other reviews saying that it had no romance (usually my favourite thing). But in the end, it didn't matter - the central friendship is as compelling as any romance, and more moving than many I've seen. Beyond that, each side story is almost as heart-rending. What I love about this drama is that the characters all face realistic, emotionally complex problems, to which there are no easy solutions. They tackle those problems with bravery and persistence, but they also sometimes withdraw in fear and selfishness. That just makes you love them all the more. Each one is so relatable and ultimately, loveable - even those you feel indifferent towards at first. There are no quick fixes, no sweeping drama cliches. You feel like the world these characters live in is not so different from our own. Apart from the writing and acting, the drama is visually quite flat - there's nothing special about the direction or cinematography. The music is good but also not outstanding. But that just serves to underscore how careful and considered the writing and performance is. The fact that the drama is so gripping even when the visuals are so basic really says something and makes this a standout for me. And yes, Lee Jong Suk is adorable in it.