Iroha Sakayori in Cosmic Princess Kaguya! is voiced by Anna Nagase in the Japanese version and Dawn M. Bennett in the English dub. Both actresses bring a grounded, emotionally layered quality to Iroha — a self-reliant teenager whose carefully maintained composure is gradually softened by her unexpected bond with the free-spirited Kaguya.
Anna Nagase (Japanese Voice Actor)
Date of Birth
March 31, 2005
About Anna
Anna Nagase (永瀬 アンナ) is a Japanese voice actress born and raised in Tokyo, affiliated with the prestigious talent agency 81 Produce. She began performing and acting from a young age, developing a passion for the craft through school activities and public presentations. Her interest in voice acting specifically was sparked when she encountered the medium while studying — finding its difficulty a reason to pursue it more seriously rather than step away. She officially joined 81 Produce as a junior member in April 2020.
Nagase rose to broader recognition in 2022 when she was cast in her first lead role as Ushio Kofune in the anime series Summer Time Rendering, a performance that required her to learn the Wakayama dialect. That dedication to craft earned her the Best New Actor Award at the 17th Seiyu Awards in 2023, a significant milestone for a voice actress still in her late teens. Since then, she has steadily expanded her range across a variety of genres and character types.
Her portrayal of Iroha Sakayori in Cosmic Princess Kaguya! draws on her ability to balance outward strength with internal vulnerability. Iroha is a character who presents as capable and self-sufficient while concealing deep loneliness, and Nagase navigates those contrasting layers with nuance — her vocal tone shifting from cool and composed to warm and tender as Iroha’s relationship with Kaguya deepens over the course of the film.
Hometown
Tokyo, Japan
Career Highlights
- Iroha Sakayori – Cosmic Princess Kaguya!
- Ushio Kofune – Summer Time Rendering
- Hack – Yurei Deco
- Riko Amanai – Jujutsu Kaisen: Kaigyoku/Gyokusetsu
- Harley Quinn / Dr. Harleen Quinzel – Isekai Suicide Squad
- Naoki Azuma – Takopii no Genzai
- Akane Ousaki – Akane-banashi
Full Current Filmography
The following list reflects documented credits and may not be exhaustive.
Anime (Selected, Chronological Highlights)
- Hack – Yurei Deco (TV, 2022)
- Ushio Kofune – Summer Time Rendering (TV, 2022)
- Mahoro Jin – Bucchigiri?! (TV, Winter 2024)
- Youki – Himesama “Goumon” no Jikan desu (TV, Winter 2024)
- Rentt Faina – Nozomanu Fushi no Boukensha (TV, Winter 2024)
- Harley Quinn / Dr. Harleen Quinzel – Isekai Suicide Squad (TV, Summer 2024)
- Naoki Azuma – Takopii no Genzai (ONA, 2025)
- Riko Amanai – Jujutsu Kaisen: Kaigyoku/Gyokusetsu (Movie, 2025)
- Makina Kurusu – Ginga Tokkyuu Milky☆Subway (TV, Summer 2025)
- Yura – Onmyou Kaiten Re:Birth (TV, Summer 2025)
- Koyuki Hikawa – Koori no Jouheki (TV, Spring 2026)
- Akane Ousaki – Akane-banashi (TV, Spring 2026)
- Iroha Sakayori – Cosmic Princess Kaguya! (Movie, 2026)
Video Games (Selected)
- No video game credits are confirmed in the verified filmography data available at time of writing.
Critical Reception
Anna Nagase’s performance as Iroha Sakayori has been noted for its emotional authenticity, particularly in conveying the tension between Iroha’s composed exterior and her inner longing. Her ability to deliver warmth and complexity within the same line of dialogue has been highlighted as a key element of the film’s emotional core. Fans and critics following her career on Anime News Network and MyAnimeList have pointed to this role as a strong continuation of the range she demonstrated in Summer Time Rendering.
Social Media
Anna Nagase is active on X (formerly Twitter) at @anna_nagase.
Dawn M. Bennett (English Voice Actor)
About Dawn
Dawn M. Bennett is an English-language voice actress who provides the voice of Iroha Sakayori in the English dub of Cosmic Princess Kaguya!. She is credited across multiple sources including Behind the Voice Actors and MyAnimeList as the official English voice for the character, alongside the broader English dub cast assembled for the Netflix release.
Bennett brings a measured, grounded quality to Iroha that suits the character’s studious and self-reliant nature. Her performance anchors the emotional journey of a teenager who gradually opens up to someone she never expected to care for, making her casting a natural complement to the warmth that Yuko Natsuyoshi’s Kaguya brings to their dynamic in the dub.
Career Highlights
- Iroha Sakayori – Cosmic Princess Kaguya!
Full Current Filmography
The following list reflects documented credits and may not be exhaustive.
Anime (Voice Acting)
- Iroha Sakayori – Cosmic Princess Kaguya! (Movie, 2026)
Critical Reception
The English dub of Cosmic Princess Kaguya! was released via Netflix alongside the Japanese version, and Bennett’s performance as Iroha has been recognized by dub viewers as a faithful and emotionally resonant rendition of the character. Specific critical coverage of her individual performance remains limited at the time of writing, but the dub as a whole has been well-received within the anime community.
