Though initially having plans to enter nursing school after graduation, she was further influenced by South Korean singer BoA,[3] and ultimately decided to study music instead.

At the recommendation of a vocal instructor, she joined the (defunct as of July 2016) idol group Star-Bright★REX[4] under the name Chiaki (Chī-chan).

[b] On February 11, 2016, she began her solo career as Chiaki Mayumura (眉村ちあき), writing her own songs and holding concerts.

On December 22, 2017, she held a press conference in Karasuyama Community Center, Tokyo, and she announced she registered and founded “Kaishaja Naimon Co., Ltd”.

On June 10, 2018, she appeared on a Japanese television program known as God Tongue (Goddotan・ゴッドタン), where she ad-libbed a song about vomit called Gero (ゲロ).