Chiaki Mayumura

Chiaki Mayumura (眉村ちあき, Mayumura Chiaki, born September 12, 1996) is a Japanese idol singer and songwriter currently associated with Toy's Factory. She has released five major albums charting on Oricon's Top 100. She calls herself a “track maker idol with playing guitar”. She is also the chairperson of Kaishaja Naimon Co., Ltd (Not Company). Fans call her Chi-chan.