I was watching the japanese drama Bloody Monday which stars Miura Haruma of Koizora (the movie version) when I noticed this girl as one of the supporting cast...

the guy is Miura Haruma

Then I remembered that she's the girl in the promotional video of Tohoshinki's Doushitte Kimi Wo Suki Ni Natte Shimatan Darou.

She's pretty right? and she does not really look like a Japanese.  Her name's Fujii Mika, 20 years old (she's young!) and it seems like she's new in the show business.  There are only a few dramas and movies under her name and she's mostly doing supporting roles. I can't find more information about her.

Good luck to her! I can't wait to see her starring in her own drama.