Umakoshi Sachiko

Umakoshi Sachiko is a former member of Yururirapo, D-Rive, FUJI☆7GIRLs, and predia.

2010

 * In November 2010 Sachiko became a founding member of predia.

2012

 * She graduated from predia on January 14, 2012, at their fourth one-man live.
 * On May 12 FUJI☆7GIRLs, the idol unit for Fujishoji (a pachinko machine manufacturing company), was formed and Sachiko became a member. She was named the group's sub-captain.

2014

 * She joined D-Rive in June 2014.

2015

 * In February 2015 D-Rive disbanded. Sachiko and fellow D-Rive member Shinkai Rena then joined Yururirapo with its formation.
 * She graduated from FUJI☆7GIRLs in March.

2016

 * In August it was reported by tabloid Shunkan Bunshun that Sachiko had an affair with the husband of multi-talent Ogura Yuko. Her contract with Platinum Production and her membership of Yururirapo was terminated as a result of the scandal. Her social media accounts were closed and she has not been active in entertainment since.

Singles

 * Speed Queen
 * Gear Spark

Albums

 * Invitation

Mini-Albums

 * Escort me?

Singles

 * Dia Love
 * Dream Of Love
 * Honey B

Singles

 * Gozen 2ji Lonely Girl
 * Aitai Aitai