

She was actually born in New York, but I'm pretty sure she is Japanese. I first heard of her from a song she did for Square-Enix's Kingdom Hearts video game called Simple and Clean.
Here is the music video:
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Ninja Warrior is a television show that airs in America on a channel called G4TV. It's a Japanese game show of sorts and it is really fun to watch. Men and women compete in order to defeat crazy obstacles in a certain amount of time. If you make it, you get to move on to other stages and it gets progressively harder. There have only been 2 people who have completed the entire competition and have earned the title of Ninja Warrior! The show has had more than 10 "seasons" and each one has 100 contestants, so that just goes to show you how hard this game show really is. Here are some clips:
Best Wipeouts!
Here is a clip of the first stage in all of its difficulty!