Nijigasaki High School Idol Association

The Nijigasaki High School Idol Association or the School Idol Association or known simply as the Association was a school idol group formed and led by Lanzhu Zhong and served as the rival unit to Nijigaku until it officially disbanded in Chapter 29 of All Stars.

Member positions
These are the positions for all of the members:
 * Lanzhu Zhong - (Leader/Co-founder)
 * Mia Taylor - (Co-founder)
 * Shioriko Mifune - (Co-founder)
 * Ai Miyashita - Unknown
 * Karin Asaka - Unknown
 * Shizuku Osaka - Unknown