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The Holy Grail of Eris

エリスの聖杯

Eris no Seihai

Binge-ready

Finished airing — 12 episodes, ready to binge.

Format: TV
Season: Winter 2026
Studio: Ashi Productions
Based on: Light novel
Episode length: 24 min
Started: 8 Jan 2026
Ended: 26 Mar 2026
Score: 69/100

Drama Fantasy Mystery Romance Supernatural Female Protagonist Ghost Revenge Royal Affairs Villainess Detective Anti-Hero Politics

It is common knowledge that nobles will do anything for power; lying, manipulation, and extortion are the usual tactics. However, one family is exempt from this generalization: House Grail, whose main tenets are truth and integrity. The youngest daughter, Constance Grail, is just as moral as the rest of her family, believing in always doing the right thing and helping those in need. However, these ideals do not help her when her fiancé cheats on her with another woman. Framed by his lover in the hope of her downfall, Constance has no one to hear her pleas for justice. Everyone turns a blind eye, save for one—the spirit of the infamous Scarlett Castiel—who possesses Constance and turns the tables on her accuser. However, this aid does not come without a price. Ten years ago, Scarlett was executed for the attempted murder of Princess Cecilia. But this was actually a setup; as blunt and harsh as Scarlett could be, she would never stoop so low as to use poison. She has no idea who orchestrated her incrimination, but Scarlett demands that Constance—as the only one who can see her—help her exact revenge on all those who wronged her! (Source: MAL Rewrite)

Where to watch

Crunchyroll ↗ Bilibili TV ↗ Trailer ↗

Source material

The Holy Grail of Eris ↗ · エリスの聖杯

Novel · Still publishing · 2019

Source: AniList and MangaDex (publication details only).

Credits, releases and news

Staff

Director: Morita to Jumpei
Original creator: Kujira Tokiwa
Series Composition: Kenichi Yamashita
Script: Kenichi Yamashita, Atsushi Oka, Toshiaki Satō
Character Design: Chie Kawaguchi
Art Director: Nobuhito Sue
Chief Animation Director: Jun Yukawa, Chie Kawaguchi

Japanese voice cast

Dominic Harmsworth: Jun Fukuyama
Cecilia Adelbide: Maaya Uchida
Enrique Adelbide: Natsuki Hanae
Randolph Ulster: Yōhei Azakami
Lily Orlamunde: M.A.O
Constance Grail: Kana Ichinose
Scarlett Castiel: Sayumi Suzushiro

Latest news

26 Dec 2025 The Holy Grail of Eris TV Anime's 3rd Promo Video Previews Opening Theme Song
21 Dec 2025 Crunchyroll Streams Tamon's B-Side, Sentenced to Be a Hero, More Anime in India
16 Dec 2025 Crunchyroll Announces Release Schedule for Winter 2026 Season
28 Nov 2025 Maaya Uchida, Natsuki Hanae, Jun Fukuyama Join Cast of The Holy Grail of Eris TV Anime
14 Nov 2025 The Holy Grail of Eris TV Anime Reveals Theme Song Artists, January 8 Debut

Episode titles (12)

1. At the Grand Merillian
2. An Extraordinary Villainess and an Ordinary Girl
3. Respective Answers and Beginnings
4. The Silent Ladies' Tea Party
5. And the Cock Crows to Herald the Dawn
6. The Command of the Goddess
7. A Banquet of Insectivorous Plants
8. Lily Orlamunde
9. The Holy Grail of Eris
10. For the Future
11. Those Who Defy Fate
12. The Final Chapter: At the Grand Merillian

Anime News Network readers rate it 7.15/10 (58 votes).

Source: Anime News Network. Full details at Anime News Network.

Main characters

Scarlet Castiel

スカーレット・カスティエル

Voiced by Sayumi Suzushiro
Constance Grail

コンスタンス・グレイル

Voiced by Kana Ichinose
Cecilia Adelbide

セシリア・アデルバイド

Voiced by Maaya Uchida
Randolph Ulster

ランドルフ・アルスター

Voiced by Youhei Azakami
Lily Orlamunde

リリィ・オーラミュンデ

Voiced by Mao Ichimichi
Enrique Adelbide

エンリケ・アデルバイド

Voiced by Natsuki Hanae

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Airing data from AniList. Last updated 25 Oct 2026.