Name that group! x3

[Yoona]

Ok, I love bands, and groups. Kk? So, I've had an idea. I cant explain, but here's an example of the game.
Ex:
Sara: Korean, Japanese, 9, girls
Fred: Easily SNSD! GIirls' Generation! (:
Five guys. ----- Direction
Bob: Five guys One Direction! Woohoo!
We started at five, got rid of two, added two, and now one's gone. We are two words
Sara: Girl's Day!

And so on....
I'll start:
5 members, all female, one is known as Amber. They're popular in both Korea and Japan.