Her name is Beckii Cruel, 14 years old, and really popular in Japan. Her video was viewed a lot by Japanese through Youtube. It reminds me of the model Leah dizon who went to Japan and become a singer there.

Check this video out that make her popular, she was using Haruhi's costume

I also found her new PV that shown in Japan. For some reason I feels dizzy after listening to this song for a while. LOL

So many Japanese fanboy watching her in Akihabara!!