is a Japanese voice actress and singer from Aomori Prefecture, affiliated with Atomic Monkey. She is known for voicing Shiki Ichinose in The Idolmaster Cinderella Girls, Bamboo Memory in Umamusume: Pretty Derby, and Bōrinmaru Gokokuhōtenji in Tasūketsu: Fate of the Majority.
Biography Kotomi Aihara, a native of Aomori Prefecture, was born on 2 May 1990. As a preteen, she watched Cardcaptor Sakura and Hunter x Hunter and wanted to be a "2D boy", so she gradually became interested in voice acting. This tendency had already existed in the previous few years, with her parents buying her a lot of goods associated with Sailor Uranus, a character she liked because of her voice (which was provided by Megumi Ogata). She was educated at the Atomic Monkey Voice Acting and Acting Institute, where she was taught by instructor Miki Nagasawa, and she also took part in the finals of the Seiyu Awards New Voice Actor Discovery Auditions and in the audition, winning the special prize at the latter.
Aihara voices Shiki Ichinose in The Idolmaster Cinderella Girls, a sub-franchise in The Idolmaster franchise. Since then, she has performed as a singer on several Idolmaster music releases, including "The Idolmaster Cinderella Master 038: Ichinose Shiki" (2015), which charted at #11 in the Oricon Singles Chart and the 2016 album The Idolmaster Cinderella Master Cute Jewelries! 003 (the series' first album to top the Oricon Albums Chart). She reprised her role in the anime adaptation The Idolmaster Cinderella Girls Theater.
She voices Bamboo Memory in Umamusume: Pretty Derby. In May 2024, it was announced that she would voice Bōrinmaru Gokokuhōtenji in Tasūketsu: Fate of the Majority.
She cites Shiho Niiyama as an influence.
She likes anison and is often interested in music by Megumi Hayashibara and Nana Mizuki, whose song "Scarlet Knight" she performed in her Seiyu Awards self-introduction. She likes horror and mystery games, having played repeatedly, and she also plays the puzzle games Disney Tsum Tsum and Tetris. She is a fan of 1990s anime, with her favorites being Cardcaptor Sakura and Sailor Moon Sailor Stars. Filmography Anime television series YearWorkRoleRef. 2016 Beyblade Burst Haruto Aota 2017 Duel Masters Planetta, Nagnagutulis, others 2017 The Idolmaster Cinderella Girls Theater Shiki Ichinose 2018 Cardfight!! Vanguard Maron 2018 Legend of the Galactic Heroes: Die Neue These Kircheis (childhood) 2019 Fairy Gone Child 2019 Is It Wrong to Try to Pick Up Girls in a Dungeon? Boy 2020 A Certain Scientific Railgun Boy 2020 A3! Audience 2020 Ahiru no Sora Momoharu Hanazono (childhood) 2020 Mewkledreamy Kanta Anzai 2020 The Day I Became a God Toshinori's child 2021 2.43: Seiin High School Boys Volleyball Team Kimichika Haijima (childhood) 2021 Amaim Warrior at the Borderline Takuma Fudo 2021 Takt Op. Destiny Takt Asahina (childhood) 2022 Requiem of the Rose King Young Gatesby 2022 Smile of the Arsnotoria Vellum 2023 Ayakashi Triangle Riita Kanade 2024 Solo Leveling Lina 2024 Tasūketsu: Fate of the Majority Bōrinmaru Gokokuhōtenji 2025 Reborn as a Vending Machine, I Now Wander the Dungeon Hulemy 2026 Medalist 2nd Season Riina Kojō
Original net animation YearWorkRoleRef. 2019 Gundam Build Divers Re:Rise Stola 2019 The Idolmaster Cinderella Girls 8th Anniversary Special Project: Spin-off! Shiki Ichinose 2019 The Disastrous Life of Saiki K. Female student
Video games YearWorkRoleRef. 2015 The Idolmaster Cinderella Girls Shiki Ichinose 2017 Onigiri Amanojaku 2017 Quiz RPG: The World of Mystic Wiz Lila G 2019 Girls' Frontline USAS-12, wz.29 2019 Monster Strike Mei, Sango 2020 Sakura Kakumei Rin Shiranui 2021 Kirara Fantasia Yuki Takahashi 2021 Smile of the Arsnotoria Vellum 2022 Umamusume: Pretty Derby Bamboo Memory 2022 Arknights Erato 2025 Honkai: Star Rail Young Phainon 2026 Genshin Impact Jeht
Discography Title Year Single details Peak chart positions Sales JPN JPNHot "The Idolmaster Cinderella Master 038: Ichinose Shiki" 2015 Released: 18 November 2015 Label: Nippon Columbia 11 — — "—" denotes releases that did not chart or were not released in that region.
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