Inaba Atsuko began her career as a Japanese idol with female group Osaka Performance Doll from 1993 to 1996 and did 6 singles and 2 albums with them. She released only one single in 1996. It was released when Inaba was in the group and was available only at their events. Later on, she received training in Atlanta, Georgia. When she went back to Japan, she then joined the new Hello! Project group Taiyou to Ciscomoon in 1999 and stayed till its end in late 2000.