She played Hanayo Koizumi in the idol group μ's (pronounced "Muse"), which is part of the Love Live!
[2] In 2008, she moved to Sparks Productions and worked as a gravure model under the name Yurika Narahara.
In early 2015, μ's, the idol group that Kubo performed with as "Hanayo Koizumi", won the 9th Annual Seiyū Award.
[6] The group went on hiatus after their final concert on 31 March and 1 April 2016, at the Tokyo Dome.
[11] Her fan club "SHiKAKO PARK", stopped taking new members on 1 January 2018, and shut down later that year on 31 May.