This is the band Blue Three. Say their name out loud, and then say it again:
Very quickly. You will soon understand what their gimmick is.
The lead singer had a remote guitar or something,
so he could run anywhere he wanted and we could
still hear him--even when he disappeared into the train station!
The show began and ended with a nunchuku performance.
These people sang some enka songs. Pretty good.
I think these guys were junior high or high school students.
My friend's band, SCRAP.
They have a vibrant sound and a lot of energy.