|Date of birth:||April 7, 1967|
|Place of birth:||Izumi, Kagoshima, Japan|
|Labels:|| ZAIN RECORDS (1993-2007) |
UK Sweet (2013-present)
Keiko Utoku (宇徳敬子 Utoku Keiko) is a Japanese singer-songwriter and former member of the idol group Mi-Ke.
Keiko Utoku started her career when she became a model for Stardust Promotion and then became a chorus member for the band B.B.QUEENS. When in the band as a chorus member, Utoku and two other members formed the idol group Mi-Ke in 1991 to 1993. When the band split, she began her solo career with the release of her first single, "Anata no Yume no Naka Sotto Nobiko Mitai". She also began to serve as backing vocals for a lot of Being artists like Rina Aiuchi, U-ka saegusa IN db, FIELD OF VIEW, and others.
In 2003, she started to perform live concerts. She also started to write lyrics and compose for Being artists like Sparkling☆Point. Then in 2006, more then eight years since her last album, Utoku released her fourth original album, entitled "Yorokobi no Hana ga Saku ~True Kiss~". She also started to become a radio personality by hosting her own radio shows.
 Song themes in Detective Conan
 Closing themes
- Hikari to Kage no Roman - Closing 3 (Episodes 52~70)
- Keiko Utoku also had many other names such as Cecile Minami, Secil Minami, and UK.