The original is a Korean Drama, (Left image)
The remake is a Japanese Drama, (Right image)
The story is focused on the boy band name A.N.JELL.
The management company of A.N.JELL insisted that they add a new singer to the group as the lead vocal. However, the new selected member had to go to the US to repair a botched eye just before signing the contract. That's for the Korean version, I think the Japanese version was his nose or the throat (I'm not sure which one).
Anyway, the since this new member have to leave, the agent came up with the idea of having his twin sister, to stand in for him and pretend that she's her brother.
The two of them grew up in an orphanage and she who was all set to become a nun, yet she agreed to this charade as she didn't want to spoil her brother's chance to become famous, which would make it easier to look for their mother later.
I like both the series. In a different way.
My most favorite character is Jeremy (Korean name). His child like attitude is really cute, his happy-go-lucky side is always fun to see, I guess that's why when he was finally in a serious mood and got all well... serious and cried. I cried too. The Japanese version of him (Yuki) made me laugh just as the original, but the overall acting I like the Korean version of him.
The Female lead: Go Mi Nam/Mi Nyu (Korean) sometimes annoyed me yet she's okay, since the story won't be complete without her. But Sakuraba Mio/Miko (Japanese) is more likable and her acting captured my heart more. I was able to feel sad when she was sad.
The Male lead: Hwang Tae Kyung (Korean) and Katsuragi Ren (Japanese) is equally good and bad so I have not much comment about them.
The last one is: Kang Shin Woo (I like his look better) I find him more good-looking than his Japanese version Fujishiro Shu. However, when it comes to acting, I think there's little difference, though I found myself rooting for Shin Woo, more than Shu (his bit more gloomy)
As for the antagonist: Yoo He Yi, I think she portrayed her character well, really hateful and I find nothing to like about her, but her evilness was just too much. Her Japanese version NANA on the other side was also evil, but somehow I was able to relate to her, it was like I understand her and at some point I end up liking her, with her evil attitude and everything. It's like it fine just for her to be herself. Though I never felt that for Yoo He Yi.
Well, that's my review for the characters. As for the series itself, as I mentioned. I like both, the way the story goes and everything.
Though, the last moment in the Japanese version cheered me up more than the Korean.