She was represented by Amuse Inc. from 2004 to 2015, and has been a member of three musical groups formed by the company: Karen Girl's, Sakura Gakuin, and its first sub-unit Twinklestars.
[3] Joining the talent agency Amuse Inc. in 2004, Mutō began her career as a child model for the magazine Kids Style.
[7] In April 2013, Mutō began a solo project,[4] releasing her first cover double EP, DNA1980, in July, coinciding with a series of headlining shows.
[8] In 2014, she returned to the stage to begin a solo career in major, releasing her first studio album, Eien to Shunkan, in April.
[12][13][14] She released her first photo book on March 12, 2024, titled The First and The Last (最初で最後, Saisho de Saigo), to commemorate 10 years since her solo debut.