# Ami Koshimizu
**Ami Koshimizu** (小清水亜美) is a Japanese voice actress, stage actress, and singer from Tokyo, known for lead roles such as Nadja Applefield in *Ashita no Nadja*, Anemone in *Eureka Seven*, Kallen Kozuki in *Code Geass: Lelouch of the Rebellion*, Holo in *Spice and Wolf*, and Hojo Hibiki, or Cure Melody, in *Suite PreCue♪*.[1](https://columbia.jp/artist-info/koshimizuami/prof.html) • [2](https://www.tv-ranking.com/detail/9283/profile/) She won the supporting actress award, actress division, at the first Seiyuu Awards for her role as Kallen.[3](https://www.fashion-press.net/profiles/25286/)
| Key fact | Detail |
|---|---|
| Born | 1986, Tokyo (Kokubunji city)[1](https://columbia.jp/artist-info/koshimizuami/prof.html) • [2](https://www.tv-ranking.com/detail/9283/profile/) |
| Height | 168 cm[1](https://columbia.jp/artist-info/koshimizuami/prof.html) |
| Debut role | Nadja Applefield, the lead of *Ashita no Nadja* (2003)[4](https://www.imdb.com/name/nm1840556/bio/) |
| Award | Supporting actress award, actress division, at the first Seiyuu Awards, for Kallen Kozuki in *Code Geass: Lelouch of the Rebellion*[3](https://www.fashion-press.net/profiles/25286/) |
| Signature roles | Anemone (*Eureka Seven*), Kallen Kozuki (*Code Geass*), Holo (*Spice and Wolf*), Cure Melody (*Suite PreCue♪*), Ryuko Matoi (*Kill la Kill*)[2](https://www.tv-ranking.com/detail/9283/profile/) • [5](https://megatenwiki.com/wiki/Ami_Koshimizu) |
| Agency | Office Restart, an agency she founded herself in 2022[3](https://www.fashion-press.net/profiles/25286/) |
## Early life and stage beginnings
Koshimizu joined the theater company Gekidan Wakakusa at age 12 and began working as a child performer.[3](https://www.fashion-press.net/profiles/25286/) According to her own account, she applied herself after her grandmother found a recruitment flyer, and she enjoyed the school-stage productions and costume-making that came with the troupe.[3](https://www.fashion-press.net/profiles/25286/) Her early work was conventional junior acting: appearances in stage and radio work, auditions for television drama such as *3年B組金八先生* (*3rd Year B Class Kinpachi-sensei*) and the film *Battle Royale*, and later work as a junior model.[2](https://www.tv-ranking.com/detail/9283/profile/)
A growth spurt in junior high reduced the roles she could play as a child actor, and she decided to pursue voice acting so she could play varied roles without being restricted by height or appearance.[3](https://www.fashion-press.net/profiles/25286/) Her biography notes that she was influenced to become a voice actress by Mayumi Iizuka, a senior member of the theater company.[4](https://www.imdb.com/name/nm1840556/bio/)
## Debut and early career
Koshimizu passed the audition for the lead role of Nadja Applefield in *Ashita no Nadja* in 2003, making it her debut role.[4](https://www.imdb.com/name/nm1840556/bio/) She had not attended a voice-acting training school and had no dubbing experience at all, yet was cast in the lead.[3](https://www.fashion-press.net/profiles/25286/) She has said she assumed lines were memorized before the studio session, since she knew only stage-acting methods at the time.[3](https://www.fashion-press.net/profiles/25286/) Over the year of recording, she learned script reading from Ikue Otani and phrasing and accent from Nobuyo Kyoda, developing her technique on the job.[3](https://www.fashion-press.net/profiles/25286/)
The early years after her debut built the range for which she later became known. Her Columbia profile lists lead and major roles in *GUNSLINGER GIRL*, *Daphne in the Brilliant Blue*, *Sweet Valerian*, *School Rumble*, the *Pretty Cure* series, *Futakoi*, *LOVELESS*, *Eureka Seven*, *Onegai My Melody*, *Mai-Otome*, *BLOOD+*, and *IGPX*.[1](https://columbia.jp/artist-info/koshimizuami/prof.html) She was also a regular on the Bunka Housin radio program *Comchat Countdown*.[1](https://columbia.jp/artist-info/koshimizuami/prof.html)
## Breakthrough and major roles
**Kallen Kozuki and the first Seiyuu Awards.** Her role as Kallen Kozuki (紅月カレン) in *Code Geass: Lelouch of the Rebellion* earned her the supporting actress award in the actress division at the first Seiyuu Awards.[3](https://www.fashion-press.net/profiles/25286/)
Her later work spans a wide range of character types across anime and games. The major roles commonly cited include Anemone in *Eureka Seven*, Tsukamoto Tenma in *School Rumble*, Holo in *Spice and Wolf*, and Hojo Hibiki, the Cure Melody of *Suite PreCue♪*.[2](https://www.tv-ranking.com/detail/9283/profile/) Fan and game wikis add Ryuko Matoi in *Kill la Kill*, Mai Shiranui in *The King of Fighters*, and Mikumo Guynemer in *Macross Delta* to this list.[5](https://megatenwiki.com/wiki/Ami_Koshimizu) She also voices Mugino Shizuri across the *A Certain* franchise, and reprised the role in the 2026 television anime *A Certain Dark Side's Girls Living Together (Item)*.[6](https://mantan-web.jp/article/20260916dog00m200065000a.html)
**Return to Holo.** Koshimizu reprised her role as Holo in the 2024 series *Spice and Wolf: Merchant Meets the Wise Wolf*. In an interview with Animate Times, she described the original series as a turning point in her career, and said that reapproaching the role as she was about to enter her forties, at a time when she was rethinking how to work as an actor, felt like Holo descending to her again.[7](https://www.animatetimes.com/news/details.php?id=1712045517&p=2)
## Dubbing work and recent activity
Koshimizu voices Joy in the Japanese dub of *Inside Out 2*, the Pixar film in which Joy is one of the emotions inside the protagonist Riley's head.[8](https://terukosan.com/koshimizu-ami-profile/) Her film credits in the Japanese market include appearances in the *Sailor Moon Eternal* and *Sailor Moon Cosmos* films, *[Resident Evil: Death Island](https://www.edgepedia.org/resident-evil-death-island)*, and *Detective Conan: The Flashback of the One-Eyed*.[3](https://www.fashion-press.net/profiles/25286/)
After working as a freelancer, she announced in 2022 that she had joined Office Restart, a voice-acting agency she had founded herself.[3](https://www.fashion-press.net/profiles/25286/)
## References
1. [小清水亜美プロフィール, Nippon Columbia official site](https://columbia.jp/artist-info/koshimizuami/prof.html)
2. [小清水 亜美 プロフィール, tv-ranking](https://www.tv-ranking.com/detail/9283/profile/)
3. [小清水亜美のプロフィール・経歴・出演映画, Fashion Press](https://www.fashion-press.net/profiles/25286/)
4. [Ami Koshimizu Biography, IMDb](https://www.imdb.com/name/nm1840556/bio/)
5. [Ami Koshimizu, Megami Tensei Wiki](https://megatenwiki.com/wiki/Ami_Koshimizu)
6. [とある暗部の少女共棲：小清水亜美インタビュー, MANTANWEB](https://mantan-web.jp/article/20260916dog00m200065000a.html)
7. [春アニメ『狼と香辛料』小清水亜美さん（ホロ役）インタビュー前編, Animate Times](https://www.animatetimes.com/news/details.php?id=1712045517&p=2)
8. [金曜ロードショー「インサイド・ヘッド2」小清水亜美のプロフィール, Kininaru](https://terukosan.com/koshimizu-ami-profile/)
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*Topic: Encyclopedia › Arts and culture › Screen and stage › Film and television › Screen people and creators › Voice performers › Japanese voice performers › Surnames symbols to M*
*Initially written Sep 17, 2026 · Reviewed: Sep 17, 2026; Oct 25, 2026 · Edited: Oct 12, 2026; Oct 25, 2026 · Last review: Oct 25, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license