Numakura decided to become a voice actress while in high school after listening to a drama CD lent to her by a friend who liked
anime; she also became a fan of the
Gundam franchise during this time and she cited this as another reason for her deciding to become a voice actress. Numakura made her voice acting debut in 2008 after auditioning for a role in the franchise
The Idolmaster; she was cast as the character Hibiki Ganaha. She made her anime voice acting debut in 2009, playing the role of a student in an episode of the anime series
Gintama. and as the role of Yurika Tōdō in the franchise
Aikatsu!. In 2013 she played the role of Riko Kurahashi in the anime series
Love Lab In 2014 she played Nanami Tokou in the anime series
Brynhildr in the Darkness In 2017, she was cast as Akane Hiyama in the anime series
Love Tyrant. the title song is used as the opening theme to the anime television series
Magical Girl Raising Project. Her second single "Climber's High!" was released on February 8, 2017; the title song is used as the opening theme to the anime series
Fuuka, where Numakura plays the role of Tama. Numakura opened her official fanclub Area Nu in April 2017, and she released her first album
My Live on June 14, 2017. She made an appearance at
Animelo Summer Live in 2016 and she made an appearance at
Animax Musix 2018. She released her second album on February 20, 2019. On November 25, 2019, Numakura announced that she would be ending her solo singing career after the release of a compilation album titled on February 12, 2020 and her final concert at Toyosu Pit on February 16, 2020, although she will continue her activities as a voice actress. Her fanclub is set to close in March of the same year. ==Personal life==