Before becoming a seiyuu, Aiba was a professional wrestler under the name Yūki Harima (播磨佑紀, Harima Yūki) for about two years, working as a stage actress with the same name too. During her pro-wrestling career, she was part of the organization "Beginning" and made her debut on September 6, 2015. Aiba fought five times before retiring from the ring and does MC work for New Japan Pro-Wrestling's matches.[1]
Aiba debuted in voice acting by providing the voice of Tokoha Anjō in Cardfight!! Vanguard G: NEXT, replacing Emi Nitta. In 2017, she began voicing and performing in the franchise BanG Dream! as Yukina Minato of the band Roselia.[2] In 2018, she began voicing Claudine Saijō from Revue Starlight.
Aiba made her professional singing debut from Bushiroad Music in November 2016 with her first st single "Yume no Hikari Kimi no Mirai", which was used as the ending theme for Future Card Buddyfight DDD. She restarted her solo singing career with the single "Lead the way", which was released on October 16, 2019. It was used as the opening theme for the anime Cardfight!! Vanguard: Shinemon.[3]
On March 3, 2018, Aiba, who was a member of the unit Dōbutsu Biscuits x PPP, was one of the winners of the Singing Award during the 12th Seiyu Awards. In 2020, she and Roselia received the Singing Award at the 14th Seiyu Awards.[4]
^【声優アワード】Roseliaが歌唱賞 相羽あいな「バンドリーマーの皆さまのお陰です」 [[Voice Actor Award] Roselia wins Singing Award; Aina Aiba: "Thanks to all BanG Dreamers"]. Oricon (in Japanese). March 7, 2020. Archived from the original on March 24, 2020. Retrieved March 24, 2020.
^けものフレンズプロジェクト. Kemono Friends Official Website (in Japanese). Archived from the original on April 13, 2020. Retrieved March 31, 2020.
^ abc"Staff & Cast". BanG Dream! Official Website (in Japanese). Archived from the original on June 28, 2018. Retrieved October 7, 2021.
^"少女☆歌劇 レビュースタァライト". Revue Starlight Official Website (in Japanese). Archived from the original on April 6, 2023. Retrieved March 31, 2020.
^"Character". BanG Dream! Season 2 Official Website. Archived from the original on January 26, 2019. Retrieved December 26, 2019.