I wanted to watch this show real bad because of Nam Yoon Su. I had already seen him as a devilishly evil teenager and as a heavenly saint of a prince, so I had known how versatile he is. In this series, he is supposed to be a realistic person, sometimes good, sometimes bad, and a gay. He is perfect in every aspect.
As the title already suggest, this is not a fluffy love story between two innocent boys. It's a story of the MC's life, how he was hurt and healed by other people, and how he hurt and healed others. There is lots of sadness and some happiness, both met with Nam Yoon Su's disarming smile. There are serious issues, there is entertainment. You really get inside the character's world, because it is so true to life.
Some suggest that the characters of MC's bfs aren't real in the plot - we just follow his creative process when he writes his consecutive novels. I didn't think about it when watching the series, but it sure is an interesting view.
As for music - I was never annoyed by it, which is what really matters to me when watching a drama.
I probably will rewatch it - we learn important details in later episodes that cast a totally different light at what happened first,
Overall - loved it.