Kaya is a Japanese voice actor and singer known for her role as HiREN in the multimedia project Utahime Dream. Her career began after she successfully passed the Wake Up, Girls! AUDITION held by Avex and 81 Produce in September 2012, which led to her voice acting debut in 2014. She is originally from Morioka City in Iwate Prefecture.

Kaya is closely associated with the Wake Up, Girls! franchise, where she voiced the character Kaya Kikuma and was a sub-leader of the real-life voice actor unit Wake Up, Girls!. Other notable anime roles include Yaya Sasame in Hanayamata, Karen Kisaragi in Hundred, Tama in Death March to the Parallel World Rhapsody, and Filimøs Harrifenas in So I'm a Spider, So What?. Her work also extends to video games, with roles in popular titles such as Granblue Fantasy, Azur Lane, and Uma Musume: Pretty Derby.

In recognition of her work as part of the Wake Up, Girls! unit, she received a Special Award at the 9th Seiyu Awards in 2015. Beyond voice acting, she is also a singer, performing the opening theme song Reincarnation for the 2025 anime television series Hero Without a Class. Her involvement with the Utahime Dream project includes being a member of the special unit Utahime Dream Allstars, which performs the ending theme song for the same series. She was formerly affiliated with the agency 81 Produce and began working as a freelancer in 2025.