In my opinion this drama has one main Theme "How much can we hurt the second male lead". I didn't read the Original Manga but I watched the japanese version in which I liked the story but not the Acting. The Korean version is the opposite. The drama is boring. 16 Episodes are too much. i think it would have been better when there were only 12 Episodes. So the story was lame...But maybe my expectations were too high for the drama because I was very excited for the cast. The best was the Acting and the chemistry between the bandmembers. When Lee Hyunwoo was cast I was like "Please give him a good leading lady" because he hasn't much luck with his partners. Then there were the news that Joy from Red Velvet would join...I don't have a problem with idols acting, but I don't approve of them when there first ever role is the main role. So I had very high expectations...I mean the production staff must have a good reason for casting her as Soorim and not as a supporting Actress...Honestly, she was okay. Not very good but not bad either. Lee Hyunwoo was good (like every time even though the story is bad). I hope he gets a better script next time. I think the role doesn't suit him so I don't have much to say about him. But his chemistry with Joy was...bad or should I say there wasn't any chemistry between them? There are two other Actors I want to talk about because they were amazing in their roles. One of them is Lee Seowon. I love him since I first saw him in Uncontrollably Fond as Suzys little brother. His role here is very sad, dramatic and lonely. Chanyoung joined Crude play when Hangyeol (LHW) left to produce their music. Over the years he felt never like he was accepted by the other members. He thinks he is a substitute for Hangyeol and has bad feelings about him. He wants to be better. In my opnion he isn't the typical second lead who is mean to his rival because of the girl both of them love. I pitied him from episode one until the end. Lee Seowon played so amazing. He is one of two reasons why I could watch this drama until the end. The Second reason is Kim Sungjoo. He is the main vocal and korean Leader of the Boygroup Uniq who debuted 3 years ago. He plays Yoo Shihyun, the leader and Vocal od Crude Play, who is funny and loves his members very much. Sometimes he seems like a playboy but in reality he is hurt because there is one girl he loves for a long time. Sadly, his role gets not much attention. His Chemistry with Lee Seowon and the others is very good. Even though his Screen time together with Lee Haeun (who played his sunbae from high school Sooyun) isn't very much the chemistry between them is very good and i wished that couple would get an extra drama v.v The last few episodes I pitied him a lot. He was so sad and I wanted to hug him. Like Lee Seowon he acted very good for a rookie. I think he has main lead potenzial and is one of the few Idols who can really act. The Music was good, even though I don't liked the songs by Joy. I don't know why, maybe it is because i don't like her voice v.v. But the Songs by Crude Play are very good. Sungjoo has a very good voice. I am sure he could sing more OST... I would recommend the drama for hardcore Red Velvet Fans and for people who doesn't care about the story but about the Acting.