CORE OF SOULCore of Soul (formerly Core of Sun) is a J-pop band. The group formed when Song met Nakamura and Iizuka at a school in Osaka. They disbanded March 24, 2006 after completing their Asian tour in Osaka.
- Fukiko Nakamura (中村 蕗子, Nakamura Fukiko, born March 14, 1983) - Vocals
- Rui Song (ソン ルイ, Son Rui, born November 13, 1981) - Guitar and Bass, Beijing native
- Keisuke Iizuka (飯塚 啓介, Iizuka Keisuke, born January 9, 1983) - Programmer