Oohhh, B5S is a music and dance school, and from their tweets, website, and Naver blog, I think that some of the YG dancers came from or teach there. ^^ Awesome! ❤
G-dragon and 2NE1 congratulates BS5 Music and Dance academy
Credits:
Source: B5S Academy Twitter
Re-uploaded by: OhDara
oh-dara.com 
Comments on: "Twitter: B5S Music and Dance Academy Tweets a Picture with 2NE1" (1)
I CAN’T FIND G..