Miki Azumi in The Ramparts of Ice is voiced by Fūka Izumi in the Japanese version and Brianna Knickerbocker in the English dub. Miki is described as the popular, vibrant childhood friend of protagonist Koyuki Hikawa, and both casting choices reflect a warmth and energy well suited to a character who serves as the social and emotional anchor of the ensemble.
Fūka Izumi (Japanese Voice Actor)
Date of Birth
January 11
About Fūka
Fūka Izumi (和泉 風花) is a Japanese voice actress affiliated with Amuse Inc. She developed a passion for anime from an early age, citing the Gintama anime series as the spark that first drew her toward voice acting as a career. After completing her training at the Japan Narration Actor Institute, she made her professional debut in 2018 and initially joined the talent agency VIMS.
Izumi built her early career through supporting roles in anime and games, including Z/X: Code Reunion and the mobile games Magia Record and Kemono Friends 3. She left VIMS in 2022 and, following a brief freelance period, joined Amuse Inc. in October of that year. Her profile rose considerably in 2024 when she took on prominent lead and featured roles, most notably Utena Hiiragi in Gushing over Magical Girls and Meme Bashame in My Deer Friend Nokotan.
Her casting as Miki Azumi in The Ramparts of Ice marks one of her highest-profile main roles to date. Miki is described as popular and outgoing, and Izumi’s established range in energetic, socially confident characters makes her a natural fit for a role that demands both brightness and genuine warmth alongside the more withdrawn lead.
Hometown
Aichi Prefecture, Japan
Career Highlights
- Miki Azumi – The Ramparts of Ice
- Utena Hiiragi – Gushing over Magical Girls
- Meme Bashame – My Deer Friend Nokotan
- Rin Rindō – Highspeed Etoile
- Sooha – Dark Moon: The Blood Altar
- Yakumo Ezo – Chained Soldier Season 2
Full Current Filmography
The following list reflects documented credits and may not be exhaustive.
Anime (Selected, Chronological Highlights)
- (2024) Meme Bashame – My Deer Friend Nokotan
- (2024) Utena Hiiragi – Gushing over Magical Girls
- (2024) Rin Rindō – Highspeed Etoile
- (2025) An Natsue – Flower and Asura
- (2026) Sooha – Dark Moon: The Blood Altar
- (2026) Yakumo Ezo – Chained Soldier Season 2
- (2026) Milch Zebul – Kanan-sama wa Akumade Choroi
- (2026) Miki Azumi – The Ramparts of Ice
Video Games (Selected)
- Norma Hollowell – Zenless Zone Zero
Critical Reception
Fūka Izumi’s performance as Miki Azumi has been noted positively by viewers tracking the series on MyAnimeList, where the character has accumulated favorites among early watchers of the Spring 2026 season. Her work on My Deer Friend Nokotan in 2024 established her as a voice actress capable of carrying comedic and expressive lead roles with considerable energy, a quality that translates well to the vibrant Miki Azumi.
Social Media
Fūka Izumi is active on X (formerly Twitter) at @izm_tako.
Brianna Knickerbocker (English Voice Actor)
Date of Birth
December 31, 1982
About Brianna
Brianna Knickerbocker is an American voice actress and singer-songwriter based in Los Angeles, California. Born in Pittsburgh, Pennsylvania, she originally pursued a career in fashion design before a pivotal change of direction led her to voice acting. After responding to an acting listing and booking the role, she committed fully to the craft and has since built an extensive career in English-dubbed anime and video games.
Knickerbocker is perhaps best recognized for her role as Rem in Re:Zero − Starting Life in Another World, Kanao Tsuyuri in Demon Slayer: Kimetsu no Yaiba, and Hu Tao in Genshin Impact. She received the Staff Choice and People’s Choice Award for Breakthrough Voice Actress of the Year at the 4th Annual BTVA Anime Dub Awards. Her casting often leans toward soft-spoken, kind, and emotionally layered characters, though she has demonstrated range in more outgoing roles as well.
As the English voice of Miki Azumi in The Ramparts of Ice, Knickerbocker takes on a character that is notably more socially confident and popular than many of her signature roles. The English dub was produced by VSI Los Angeles, and her involvement alongside a cast that includes Kyle McCarley and Erika Harlacher signals a strong localization effort for the Netflix series.
Hometown
Pittsburgh, Pennsylvania, USA
Career Highlights
- Miki Azumi – The Ramparts of Ice
- Rem – Re:Zero − Starting Life in Another World
- Kanao Tsuyuri – Demon Slayer: Kimetsu no Yaiba
- Itsuki Inubozaki – Yuki Yuna is a Hero
- Chisaki Hiradaira – Nagi-Asu: A Lull in the Sea
- Tuesday – Carole & Tuesday
Full Current Filmography
The following list reflects documented credits and may not be exhaustive.
Anime (Voice Acting)
- (2015) Chisaki Hiradaira – A Lull in the Sea
- (2015) Itsuki Inubozaki – Yuki Yuna is a Hero
- (2015–2016) Akane Awakusu – Durarara!!x2
- (2015–2016) Leysritt – Fate/stay night: Unlimited Blade Works
- (2015–2021) Elaine – The Seven Deadly Sins
- (2016–present) Wiz – KonoSuba
- (2016) Kirin Todo – The Asterisk War: The Academy City on the Water
- (2017) Erica – Berserk
- (2019) Tuesday – Carole & Tuesday
- (2019–present) Kanao Tsuyuri – Demon Slayer: Kimetsu no Yaiba
- (2026) Miki Azumi – The Ramparts of Ice
Critical Reception
Brianna Knickerbocker is a well-regarded presence in the English dub community, with her performance as Rem in Re:Zero frequently cited as a standout localization. Her track record in emotionally resonant roles, combined with her award recognition from BTVA, positions her well for the role of Miki Azumi. Fans tracking the English dub cast on MyAnimeList have responded positively to the announcement of her involvement in The Ramparts of Ice.
Social Media
Brianna Knickerbocker is active on X (formerly Twitter) at @briannanoellek.
