The Holy Grail of Eris Season 1 • TV Show
The Holy Grail of Eris • TV Show • Rating 7.3 out of 10
release-radar
Are there new episodes of The Holy Grail of Eris coming?
The Holy Grail of Eris is marked as an ended series, with its final episode airing on March 26, 2026. At this time there are no new seasons or episodes announced, so the release radar for this show is effectively closed unless a revival or spin-off is announced. When the next release does arrive, it is expected to carry the same content rating of TV-14 (US), which can influence when it airs on different providers and platforms.
trailers
Watch the official trailers for The Holy Grail of Eris
Watch the main official trailer for The Holy Grail of Eris in one place. Most of these clips were released around December 2025, capturing the show at its peak marketing push. Use the carousel to sample the show's visual style, story hooks and production quality before you dive into full episodes.
Uploaded in December 2025
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overview
What is The Holy Grail of Eris about?
Betrayed by her fiancé's lover and sentenced to public execution, Constance Grail, a plain viscount's daughter known for her honesty, faces death—until a mysterious voice offers salvation. Scarlett Castiel, a noblewoman long thought dead, may be her only hope. Together, these unlikely allies uncover a dark conspiracy lurking in the heart of high society, where betrayal, secrets, and power collide. It blends animation, mystery and sci-fi & fantasy elements. The series reflects a distinct Japan style and perspective.
cast
Cast and creators of The Holy Grail of Eris
The main cast includes Kana Ichinose, Sayumi Suzushiro and Yohei Azakami. Behind the scenes, it is directed by Morita to Jumpei, shaped by showrunner Seiji Miyazaki.
Kana Ichinose
as Constance Grail (voice)
Sayumi Suzushiro
as Scarlett Castiel (voice)
Yohei Azakami
as Randolph Ulster (voices)
Mao Ichimichi
as Lily Orlamunde (voice)
Maaya Uchida
as Cecilia Adelbide (voice)
Natsuki Hanae
as Enrique Adelbide (voice)
Jun Fukuyama
as Dominic Harmsworth (voice)