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 was officially disbanded in the twenty-ninth chapter 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