???? (Okai Chisato) is a former Japanese pop singer. She is a former member of the group ?-ute under Hello! Project. She is also a former member of Mellowquad and Triplet and leader of Team Okai. On May 1, 2020, she announced she had retired from the entertainment industry.
Gender: Female
Born On: 21-Jun-1994
Last Info Sync: 1/19/2026 11:06:00 AM
Chisato Okai's Filmography on TV
List of programs starring Chisato Okai on tv. Programs are sorted in order of last seen on tv. Last updated: Feb 6, 2026 2:43 PM
MANO-MANO 2 (2012)
Abbreviated as Haro Chan (ハロチャン), is the official mook by Hello! Project featuring it's members. Disc.1 (98), Disc.2 (90).