Fire Force Holy Mother of Darkness / The Knight King's Great Adventure (Season 3, Episode 8)
TV-MA
TV Episode | 24 min | Animation, Action, Drama

Primary photo for Holy Mother of Darkness / The Knight King's Great Adventure

Fire Force

Holy Mother of Darkness / The Knight King's Great Adventure (Season 3, Episode 8)

TV-MA

TV Episode | 24 min | Animation, Action, Drama

Sister Sumire Reveals Hell Before Hibana And Karim and also Yan Li as they Plan to Stop This Force of Evil. Meanwhile Arthur Reaches out for Hope and Sets Out on an Adventure with Vulcan.

Creator

Atsushi Ohkubo (creator)

Director

Eiichi Kuboyama (episode director)

Writers

Atsushi Ohkubo (based on manga by) | Tyler Walker (adr script writer)

Composer

Ken'ichirô Suehiro (music by) (as Ken'ichirô Suehiro)

See all filmmakers & crew

Edit Released

Updated May 23, 2025

Release date

May 23, 2025 (United States)

Awards

Series awards

1 win & 19 nominations

Contacts

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Cast	+ Add Cast
19 cast members

Name	Known for
Lynn Hibana Hibana See fewer	The Promised Neverland (2019)
Yûsuke Kobayashi Arthur Boyle Arthur Boyle See fewer	Re: Zero - Starting Life in Another World (2016)
Hitomi Shogawa Sister Sumire Sister Sumire See fewer	Princess Principal: Crown Handler: Chapter 3 (2023)
Ayaka Asai Lisa Lisa See fewer	The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You (2023)
Shoya Chiba Yu Yu See fewer	Demon Slayer: Kimetsu No Yaiba Infinity Castle (2025)
Satoshi Hino Huo Yan Li Huo Yan Li See fewer	Demon Slayer: Kimetsu no Yaiba - The Movie: Mugen Train (2020)
Sachiko Honma Shopkeeper (voice) Shopkeeper (voice) See fewer	Assassin's Creed Shadows (2025)
Mao Ichimichi Iris Iris See fewer	Gokaiger Goseiger Super Sentai 199 Hero Great Battle (2011)
Kengo Kawanishi Toru Kishiri Toru Kishiri See fewer	Kaiju No. 8 (2024)
Hironori Kondo Shopkeeper (voice) Shopkeeper (voice) See fewer	Tokumei Sentai Go-Busters (2012)
Kristen McGuire Yu (voice: English version) Yu (voice: English version) See fewer	Monster Hunter Wilds (2025)
Mayu Mineda Sister Sakura (voice) Sister Sakura (voice) See fewer	Urusei yatsura (2022)
Mamoru Miyano Shinmon Benimaru Shinmon Benimaru See fewer	Death Note (2006)
Kazuyuki Okitsu Karim Flam Karim Flam See fewer	JoJo's Bizarre Adventure: Eyes of Heaven (2015)
Mallorie Rodak Woman in Black (voice) Woman in Black (voice) See fewer	Frieren: Beyond Journey's End (2023)
You Taichi Sister Clematis (voice) Sister Clematis (voice) See fewer	Demon Slayer: Kimetsu no Yaiba - The Movie: Mugen Train (2020)
Atsumi Tanezaki Woman in Black (voice) Woman in Black (voice) See fewer	Spy x Family (2022)
Kenjiro Tsuda Joker Joker See fewer	Yi Yi (2000)
Taku Yashiro Vulcan Joseph Vulcan Joseph See fewer	Gintama (2005)