Kikuchi was signed to the talent agency
Amuse Inc. at the age of eight, after winning Semi-Grand Prix (becoming a runner-up) in the company's 2007 Ciao Girl Audition. On August 2, 2010, at the age of 11, she joined Amuse's school-themed idol group
Sakura Gakuin, which had not yet released its debut single. She joined the group alongside
Yui Mizuno, who would later become her bandmate in
Babymetal. During their audition, the two performed a dance cover of "Over the Future" by
Karen Girl's, two members of which
Ayami Mutō and
Suzuka Nakamotohad since joined Sakura Gakuin; Nakamoto would later join Kikuchi and Mizuno in Babymetal, completing the trio. Besides performing as a group, Sakura Gakuin members were also divided into smaller subgroups themed around school clubs. Each club had its own musical group that recorded its own songs. Kikuchi and Mizuno first became members of the Baton Club and its musical group Twinklestars. As backing singers and dancers, they were later teamed with lead singer Nakamoto in the Heavy Music Club, with the associated music group being named Babymetal. Each member was also given a corresponding
stage name consisting of their first name followed by "metal", with Kikuchi becoming "Moametal". Before this, none of the trio knew what heavy metal music was. Babymetal became an independent trio upon Nakamoto's "graduation" from Sakura Gakuin in 2013, while Kikuchi and Mizuno graduated in 2015 and began performing with Babymetal exclusively. The two gained a writing credit under the name of their Babymetal subgroup duo, Black Babymetal, on
the band's self-titled debut album in 2014; they wrote "Song 4" together during a bus trip. Babymetal have since toured extensively around the world and released the albums
Metal Resistance (2016),
Metal Galaxy (2019),
The Other One (2023), and
Metal Forth (2025). == Personal life ==