Aki Toyosaki
Tomatsu began a singing career in 2008, performing the song "Naissance" which was used as the ending theme to the television drama series "Here Is Greenwood". Her second single "Motto Hade ni Ne" was used as the opening theme to "". In 2009, she became part of the music unit Sphere, alongside Aki Toyosaki, Minako Kotobuki and Ayahi Takagaki. She released her first album "Rainbow Road" in 2010, and two compilation albums in 2016.