Definitely I found one of their albums: Funk. I'm waiting to get it, can't wait to hear this sound. The only other asian music I have is (and mainly Japanese I think): Mad Capsule Markets, Dir En Grey, and Boom Boom Satellites.
Yes, Funk is the only album of theirs I have and I really like it
. If you ever watched There She Is animation series you will recognize the "Happy Birthday to Me" song (was used in There She Is step 2). Should you happen any other of their albums I'd love to put my hands on it too!
Also, if you like this kind of music I can recommend you Witches, another Korean rock music. One of their songs (Ddota K.y... Ddota!! Kunyo!!
) was used in There She Is step 1