Sachiko Aoyama (蒼山幸子' Aoyama Sachiko) was born on January 19th, 1991, in Chiba, Prefecture, Japan, and is a singer-songwriter who originally debuted as the vocalist and keyboardist of the band ねごと (Negoto) in 2010.

Aoyama would later go on to write and compose music for other artists after ねごと (Negoto) disbanded in 2019. In the same year, she would debut as a solo artist, with the EP まぼろし.