Voice Acting Royalty Joins The Holy Grail of Eris Anime: Natsuki Hanae, Maaya Uchida, and Jun Fukuyama Cast

The eagerly awaited television anime adaptation of The Holy Grail of Eris, the dark fantasy light novel crafted by Kujira Tokiwa and Yuunagi, has significantly strengthened its cast. Confirmed on November 28, 2025, via the official anime website, three prominent voice actors have joined the production, injecting immense star power into the series.

New Voice Actors Bring Star Power

This major casting update confirms that Maaya Uchida, Natsuki Hanae, and Jun Fukuyama are joining the series. Uchida, celebrated for her versatility across various genres, will voice Cecilia Adelbide. Natsuki Hanae, whose dynamic performances have cemented his status as a fan favorite, is set to voice Enrique Adelbide. Completing this trio is veteran industry figure Jun Fukuyama, who will portray the character Dominic Hamsworth, further boosting the series' prestige.

This newly announced talent complements the core cast, many of whom previously brought the characters to life in the light novel’s drama CD. Kana Ichinose reprises her central role as Constance Grail, the noblewoman at the heart of the mystery, while Sayumi Suzushiro returns as the infamous villainess Scarlett Castiel. The comprehensive ensemble also includes Yōhei Azakami as Randolph Alster and M.A.O as Lily Orlamünde, guaranteeing a rich and immersive vocal experience that captures the novel’s intricate world. The series is being produced by Ashi Productions, a studio recognized for successfully adapting beloved literary works.

Narrative Focus and Themes

The narrative is based on the series first launched on the Shōsetsuka ni Narō website in 2017. It centers on Constance Grail, whose life is irrevocably changed when she is wrongly accused of a crime. Her fate twists dramatically when she finds herself possessed by the spectral presence of Scarlett Castiel. This unlikely duo, the framed noble and the villainess’s ghost, must collaborate to unravel a sprawling and dangerous conspiracy that threatens to dismantle the very foundations of society. The story masterfully delves into profound themes of redemption, the true nature of identity, and the relentless pursuit of truth amidst pervasive deception.

Premiere Date and Theme Songs Confirmed

Fans can mark their calendars for the premiere scheduled for January 8, 2026, airing at 11:56 p.m. on TBS and its 28 affiliated networks. A subsequent broadcast will follow on BS11 on January 10 at 1:00 a.m. Demonstrating a robust release strategy, the adaptation will also stream online ahead of its traditional TV debut on ABEMA and the d Anime Store, with specific digital dates to be confirmed soon. Enhancing the viewing experience, the opening theme will be 'Happy Ever After feat. YU-KA,' performed by Reina Washio, and the closing theme, 'Camellia,' will be delivered by Yukari Tamura.