From February 1995 until April 2006 Kirito (キリト) was the vocalist and leader of Japanese rock band PIERROT. In summer 2005 he launched a solo career by releasing the single "Door" in July and then an album "Hameln" in August. He then turned his attention back to PIERROT, and released his second single in March 2006, not long before PIERROT disbanded.
Starting his career in 1999, Daigo fronted the glam rock group JZEIL. After they disbanded in 2001, DAIGO began his solo career, first as DAIGO and then taking DAIGO☆STARDUST as his stage name. He released three indies singles before being signed to a major label in 2003.
Spin Aqua were a short-lived indies musical project between the model and vocalist Anna Tsuchiya and the former guitarist of OBLIVION DUST, Kaz Iwaike. The duo performed music together for a year and seven months, releasing music for less than a year under the Sony subsidiary "Ki/oon Records".