Giga & KIRA feat. 初音ミク & GUMI

Comprised of:

1. Giga Male Person, Born: 15 Dec 1991 in Akita
2. KIRA Male Person, Born: 02 Apr 2001 in
3. 初音ミク Female Character, Began: 31 Aug 2007 in
4. GUMI Female Character, Began: 26 Jun 2009 in Japan