BRATS.

K-Pop

BRATS (J-Rock Group) Members BRATS is best described as an all female J-Rock band formed in 2011 by sisters Rei Kuromiya and Aya Kuromiya. Another profile detail is that they made their stage debut on July 28th, 2012 at Shibuya TAKE OFF 7. Additional background says that The original line-up consisted of four members total, and there are three different former members altogether. The profile also notes that they suspended activities for a short time in 2016, but later resumed in 2017.