This is good. I cannot say I loved it because of bitter-sweet ending that I hate the most, but it's certainly a great drama. Don't get me wrong, ending was good, that's just me whining that it didn't ended the way I expected. But that is irrelevant. Lee Min Ki was great as Byung Hee, even though it was just a guest role. Other actors despite being young did excellent and portrayed their characters very well. Story is well done though I notice some minor holes in it in the later part, but that's understandable and almost unnoticeable. Episodes are about 45 minutes long. Which is actually very good, I don't like too long episodes. Not once did I feel boredom or skip parts of the story. Music is perfect. I liked almost everything with few exceptions. Jaywalking (the song) have a very catchy rhythm. I didn't like it much at first but it's kinda stuck in my head now. I'm not sure if I'll watch it again, probably because of the ending but who knows. In short if you are not looking for a hard core romance drama, and like rock music and friendship then this is definitely for you.