The anime adaptation of Hiromu Arakawa’s dark fantasy manga, Yomi no Tsugai (Daemons of the Shadow Realm), has been steadily building its world since its premiere earlier this month. Now, the series has solidified its narrative foundation with the announcement of key supporting voice actors who will bring pivotal secondary characters to life. This latest reveal, shared via the anime’s official X (formerly Twitter) account, adds significant star power and depth to a production already backed by the esteemed Studio Bones.
A Stellar Supporting Cast Joins the Shadow Realm
The newly announced cast members represent a mix of seasoned veterans and rising talent, each tasked with portraying characters crucial to the unfolding drama in the village of Kage. Leading the list is the acclaimed Shinichiro Miki, known for iconic roles like Mustang in Fullmetal Alchemist: Brotherhood. He will voice Ivan Yosano, a character whose presence is sure to carry significant weight. Reina Kondou, recognized for her work as Alpha in The Eminence in Shadow, takes on the role of Makoto Tachikawa. Hayata Ookawa, from The Fragrant Flower Blooms With Dignity, will lend his voice to Kenichi Hamura.
Perhaps the most intriguing casting is that of Ayumu Murase (Black Clover, Haikyu!!), who is set to perform a dual role. Murase will voice both Inyou (representing the Yin and Yang) and the entity known as Korihenge, a fox and tanuki daemon. This dual assignment highlights the versatility required for the series’ complex spiritual and mythical elements.
Behind the Scenes: A Creative Powerhouse
The voice talent joins an already impressive creative team assembled for this adaptation. Directing the series at Bones Film is Masahiro Andou, whose directorial credits include Sword of the Stranger, a film celebrated for its exquisite action choreography. Handling series composition is Noboru Takagi, a writer with a strong track record on complex narratives like Golden Kamuy. Character design duties fall to Nobuhiro Arai (Chaika – The Coffin Princess), ensuring the anime’s visual style remains faithful to Arakawa’s distinctive artwork. Rounding out the key staff is composer Kenichiro Suehiro (Goblin Slayer, Re:Zero), who will provide the series’ atmospheric score.
The Source Material: Arakawa’s Latest Epic
Yomi no Tsugai marks Hiromu Arakawa’s much-anticipated return to the pages of Square Enixaa’s Monthly Shonen Gangan magazine, where she began serializing the story in December 2021. The manga, a dark action-fantasy, follows the story of Yuru and his twin sister Asa, who become entangled in a fateful battle involving mystical guardians known as “Tsugai.” The series quickly garnered attention for its intricate world-building, nuanced characters, and the signature blend of heart and hardship that defined Arakawa’s previous monumental work, Fullmetal Alchemist.
Publication has progressed steadily, with the 12th Japanese volume released on March 12, 2025. For English-language audiences, Square Enix licensed the manga in July 2022 and published the 10th volume on April 7, 2025, allowing international fans to follow the original story closely alongside the anime’s broadcast.
What This Means for the Anime’s Trajectory
The announcement of this supporting cast is more than a simple roster update; it signals the anime’s progression into deeper narrative territory. Characters like Ivan Yosano and the dual entities voiced by Ayumu Murase are integral to the lore and political machinations within the Shadow Realm. Their introduction in the coming episodes will expand the scope of the conflict beyond Yuru and Asa’s personal struggle, weaving a richer tapestry of alliances, ancient pacts, and divine conflicts.
With a premiere slot on Tokyo MX, BS11, and other stations (airing Thursdays at 11:30 p.m.), and the combined force of Arakawa’s compelling source material, Bones’ production excellence, and now a full suite of talented voice actors, Yomi no Tsugai is positioning itself as a major fantasy title for the Spring 2025 season. Fans of intricate world-building, moral complexity, and supernatural action have a compelling new world to explore.
