In the Japanese version of Witch Hat Atelier, Tetia is voiced by Kurumi Haruki. In the English dub, Tetia is voiced by Sarah Wiedenheft. The official anime character page credits Haruki as Tetia’s Japanese performer, and English-language cast listings credit Wiedenheft for the dub.

Japanese Voice Actor: Kurumi Haruki

Date of Birth

Kurumi Haruki’s full date of birth is not publicly documented in the sources I could verify. Her agency profile publicly lists her birthday as November 26.

About Kurumi

Kurumi Haruki is a Japanese voice actress represented by Aksent. Her official profile shows that she is from Tokyo, trained at the Tokyo Anime Voice Actor & e-Sports College, and came through Aksent’s affiliated training program, Shine 23rd class. Based on currently documented public credits, Haruki appears to be an emerging performer whose breakout visibility has come through newer anime and dubbing work, with Tetia in Witch Hat Atelier standing out as her most search-relevant role so far.

That makes her casting as Tetia especially notable. Tetia is one of the apprentice witches at Qifrey’s atelier and an important part of the series’ core student group, so the role gives Haruki sustained presence in a high-profile fantasy adaptation rather than a one-scene appearance. The official character page describes Tetia as the bright, energetic mood-maker of the atelier, which aligns with the youthful, lively type of performance Haruki is being asked to deliver in the series.

Hometown

Kurumi Haruki’s hometown is listed by her agency as Tokyo, Japan.

Career Highlights

Haruki’s most visible credit at the moment is Tetia in Witch Hat Atelier, a 2026 TV anime adaptation whose official site lists her in the role. Because Witch Hat Atelier received a same-day English dub and launched with substantial international attention, Tetia has become the role most likely to drive search interest in Haruki’s name.

Her agency profile also documents additional anime and dubbing work, including:

  • Boys / children in Medalist
  • Student in Puniru Is a Cute Slime
  • Child / baby mouse in Champignon no Majo
  • Nika and others in Those About to Die
  • Young Tommy in The Last of Us Season 2
  • Olivia in Poker Face Season 2
  • Farnie in Disney Junior Ariel
  • Zagreus in Blood of Zeus Season 3
  • voice-over work for BS Fuji’s “Whiskypedia”

Another useful marker in understanding her current career stage is Aksent’s December 2025 announcement that she changed her professional name from Shizuki Kurumi to Haruki Kurumi. That means some newer credits may appear under the updated name, while older or transitional listings may vary depending on database and publication timing.

Full Current Filmography

The list below reflects documented public credits from Kurumi Haruki’s agency profile and official anime materials. Because the currently available public source set is limited, this should be treated as a source-based documented filmography, not a guaranteed exhaustive master list.

Anime

  • Witch Hat Atelier — Tetia
  • Medalist — Boys / children
  • Puniru Is a Cute Slime — Student
  • Champignon no Majo — Child, baby mouse

Foreign live-action / drama dubbing

  • Those About to Die — Nika, others
  • The Last of Us Season 2 — Young Tommy
  • Poker Face Season 2 — Olivia
  • Kokuhaku History — role not specified in the public agency summary
  • IT: Welcome to Derry — Shaw Boy
  • Lord of the Flies — Johnny

Foreign animation dubbing

  • Disney Junior Ariel — Farnie
  • Blood of Zeus Season 3 — Zagreus

Voice-over

  • BS Fuji “Whiskypedia” — voice-over performer

Critical Reception

There is very little formal, actor-specific critical commentary in major English-language outlets on Kurumi Haruki at this stage of her career. What can be verified is that her casting as Tetia has been noticed in early coverage of Witch Hat Atelier, including one episode review that described her as a rookie and framed Tetia as her first major role. That is not the same as broad critical consensus, but it does show that reviewers are already identifying her performance as part of the show’s new-generation cast. See: Arum Journal review (https://arumjournal.com/2026/04/07/witch-hat-atelier-episode-2-review-the-world-of-witches-and-magic/).

Broader audience discussion around Witch Hat Atelier has also been positive about the show’s voice cast in general. On Filmarks, early viewer reactions praised the series’ cast and overall vocal performances, though those comments were aimed at the ensemble rather than Haruki alone. That means the available reception evidence supports promising early visibility, but not yet a large body of individual critical appraisal centered specifically on Haruki. See: Filmarks anime page (https://filmarks.com/animes/4671/6320).

English Voice Actor: Sarah Wiedenheft

Date of Birth

Sarah Wiedenheft was born on July 3, 1993.

About Sarah

Sarah Wiedenheft is an American voice actress known for her energetic, expressive performances across anime, video games, and animation. She began her career in voice acting in the mid-2010s and quickly gained recognition through her work with Funimation (now Crunchyroll), becoming one of the most prominent young voices in English-dubbed anime.

Her vocal range often leans toward high-energy, quirky, or emotionally intense characters, though she has also demonstrated strong versatility in dramatic roles. Wiedenheft’s performances are frequently noted for their distinctive comedic timing and emotional authenticity, which has made her a fan-favorite in both mainstream and niche anime titles.

As Tetia in Witch Hat Atelier, Wiedenheft brings her signature liveliness to the role, matching the character’s bright, enthusiastic personality while grounding it with warmth and sincerity.

Hometown

Sarah Wiedenheft was born in Amarillo, Texas, USA, and later worked extensively in the Texas anime dubbing scene.

Career Highlights

Sarah Wiedenheft has built a substantial portfolio of major anime roles, including:

  • Tohru in Miss Kobayashi’s Dragon Maid — one of her breakout roles and most recognizable performances
  • Power in Chainsaw Man — a widely acclaimed performance that significantly boosted her global recognition
  • Kanna Kamui in Miss Kobayashi’s Dragon Maid
  • Suika in Dr. Stone
  • Phosphophyllite (Phos) in Land of the Lustrous
  • Rin Shima (young) in Laid-Back Camp
  • Lily Hoshikawa in Zombieland Saga

Her ability to shift between comedic chaos (Power), innocent charm (Kanna), and introspective depth (Phos) highlights her versatility as a performer.

Full Current Filmography

The following list reflects widely documented and verifiable credits across anime and related media. Due to the size of her career and database variations, this is a representative but not fully exhaustive filmography based on publicly available records (e.g., Anime News Network, agency listings, and official credits).

Anime (Selected Notable Roles, Chronological Where Available)

  • Land of the Lustrous (2017) — Phosphophyllite
  • Miss Kobayashi’s Dragon Maid (2017–) — Tohru, Kanna Kamui
  • Kakegurui (2017) — Itsuki Sumeragi
  • Zombieland Saga (2018) — Lily Hoshikawa
  • The Disastrous Life of Saiki K. (Dub appearances) — various roles
  • Dr. Stone (2019–) — Suika
  • Fire Force (2019) — Maki Oze (young) / additional voices
  • BOFURI: I Don’t Want to Get Hurt, so I’ll Max Out My Defense. (2020) — May / supporting roles
  • Wonder Egg Priority (2021) — Rika Kawai
  • 86 (2021) — additional voices
  • Chainsaw Man (2022) — Power
  • The Eminence in Shadow (2022) — Delta
  • Blue Lock (2022) — additional voices
  • Witch Hat Atelier (2026) — Tetia

Video Games

  • Genshin Impact — additional voices (English)
  • Smite — various character voices

Other Dubbing / Animation

  • Extensive work in English dubs for anime distributed by Funimation/Crunchyroll, including background and supporting roles across multiple series.

Critical Reception

Sarah Wiedenheft has received strong praise from critics and audiences, particularly for standout roles like Power in Chainsaw Man and Tohru in Miss Kobayashi’s Dragon Maid.

Across platforms like MyAnimeList and Reddit discussions, fans frequently cite Wiedenheft as a standout dub performer, especially for high-energy or eccentric characters, reinforcing her reputation as one of the most recognizable modern English dub voice actors.

Social Media

X: @SarahWiedenheft (https://x.com/SarahWiedenheft)
Instagram: @sarahwiedenheft (https://www.instagram.com/sarahwiedenheft/)

Published by Limarc Ambalina

Limarc Ambalina is the founder of Japan Bound, a website covering all things Japan — from travel and culture to anime, manga, and pop culture. He is also the Director of Content at ISNation and the former VP of Editorial at HackerNoon. Based in Japan, he has been writing about Japanese life and entertainment since 2019, growing the site to over 2.4 million views.

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