Quite honestly, the original Korean version was better than the Japanese version. Don't get me wrong, I thought this one was very well made and the acting was great, but the stories of both dramas was very similar so I will focus on the other points. Although this is a love story, I thought that the Korean version dealt with more of the musical significance and the play out of each character than the Japanese version did. The Japanese version focused a lot more on Miko, the main character girl instead of her brother, while in the Korean version, the brother was mentioned as a looming presence. Of course though, that the brother is not the main part of the story, but I feel like Mio was somehow completely dismissed and gone from the storyline, even though he does play a part in the show. Also, these people are in a band, and yet you only hear two songs sung by them (this could be my bias since I love music). Anyway, if you greatly enjoyed the Korean version, then you will love this show as well. They are very similar, so if you don't like watching the same thing twice, then maybe you shouldn't watch this. There are some things that are different, but nothing serious.