AKB48 + SKE48 + NMB48 + HKT48

Comprised of:

1. AKB48 Group, Began: 08 Dec 2005 in Akihabara
2. SKE48 Group, Began: 2008 in Nagoya
3. NMB48 Group, Began: 2010 in Namba
4. HKT48 Group, Began: 23 Oct 2011 in Fukuoka