The Holy Grail of Eris poster

The Holy Grail of Eris

TV Show TV-14 2026 7.7 /10 Returning
MBS A MBS Original
Created by Kenichi Yamashita

Constance Grail, a plain yet steadfast daughter of a viscount, finds her life upended when she is accused of treachery after her fiancé's lover betrays her. Condemned to die in a public spectacle, she receives an unexpected offer from a voice that promises salvation. Scarlett Castiel, a... Read more

Stream Now

Where to Watch "The Holy Grail of Eris"

Stream with Subscription

Netflix
Amazon Prime Video
Disney+
Max
Hulu
Paramount+
Peacock
Apple TV+

Streaming availability last verified: February 03, 2026

About The Holy Grail of Eris

Constance Grail, a plain yet steadfast daughter of a viscount, finds her life upended when she is accused of treachery after her fiancé's lover betrays her. Condemned to die in a public spectacle, she receives an unexpected offer from a voice that promises salvation. Scarlett Castiel, a noblewoman long rumored to be dead, reappears as her unlikely ally. The pair team up against a web of secrets that binds the city's gilded elite, where rumors conceal true motives and every friendship could be a trap. Across shadowed corridors and glittering halls, they follow clues that threaten to upend everything they believe. Their alliance tests loyalties and questions who should be protected. The tone blends wit with noir mood.

This is an original animated series by Kenichi Yamashita. It stars Kana Ichinose as Constance Grail and a strong supporting cast including Sayumi Suzushiro, Yohei Azakami, Mao Ichimichi, and Maaya Uchida; no director has been announced, and a strong ensemble voices the show.

There are no major nominations announced for this series at this time. The show may face fresh scrutiny as critics weigh animation style, voice acting, and its blend of mystery, science fiction and fantasy. This could signal a shift in how audiences view animated thrillers globally.

Reception and themes: Critics and fans are likely to focus on how the show handles trust and betrayal among the upper crust, and how its sci fi fantasy mix supports a brisk, noir feel. Expect sharp dialogue, moral ambiguity, and a heroine led by resolve rather than luck.

Cultural impact: The pairing of Constance and Scarlett may spark conversations about female agency and the costs of power within ornate political games. If the visuals land and the mysteries deepen, lines from the show could become memes and fans debate loyalties and hidden motives.

Details

Release Date
January 08, 2026
Rating
TV-14
User Ratings
7 votes
Type
TV Series
Seasons
1
Episodes
12
Network
MBS, TBS, CBC, Tulip Television, SBC, BSN, tys, NBC, HBC, RKK, i-Television, SBS, IBC, BSS, MRO, OBS, TUF, RSK, TUY, tbc, RKB, KUTV, RBC, UTY, RCC, MRT, ATV, MBC
Status
Returning Series
Genres
Animation, Mystery, Sci-Fi & Fantasy
Country
Japan
Studio
Ashi Productions +4 more
External Links
View on IMDB

Official Trailer

Cast

Kana Ichinose

Kana Ichinose

Constance Grail (voice)

Sayumi Suzushiro

Sayumi Suzushiro

Scarlett Castiel (voice)

Yohei Azakami

Yohei Azakami

Randolph Ulster (voices)

Mao Ichimichi

Mao Ichimichi

Lily Orlamunde (voice)

Maaya Uchida

Maaya Uchida

Cecilia Adelbide (voice)

Natsuki Hanae

Natsuki Hanae

Enrique Adelbide (voice)

Jun Fukuyama

Jun Fukuyama

Dominic Harmsworth (voice)

Created by: Kenichi Yamashita

Seasons (1 season, 12 episodes)

Season 1

Season 1

12 episodes - 2026

Frequently Asked Questions

The Holy Grail of Eris is available to stream on Crunchyroll.

Yes, The Holy Grail of Eris is available to stream on Crunchyroll.

The Holy Grail of Eris has 1 season with a total of 12 episodes.

With a rating of 7.7/10 from 7 viewers, The Holy Grail of Eris is well-regarded and recommended by viewers.

Constance Grail, a plain yet steadfast daughter of a viscount, finds her life upended when she is accused of treachery after her fiancé's lover betrays her. Condemned to die in a public spectacle, she receives an unexpected offer from a voice that promises salvation. Scarlett Castiel, a noblewoma...

The Holy Grail of Eris stars Kana Ichinose, Sayumi Suzushiro, Yohei Azakami, Mao Ichimichi, and Maaya Uchida.

The Holy Grail of Eris was created by Kenichi Yamashita.

The Holy Grail of Eris was released on January 08, 2026.

The Holy Grail of Eris is a Animation, Mystery, and Sci-Fi & Fantasy series.

Kana Ichinose provides the voice for Constance Grail.

Sayumi Suzushiro provides the voice for Scarlett Castiel.

The show has 12 episodes across 1 season.

In this mystery sci fi series, Constance Grail is betrayed and nearly executed until a mysterious voice offers salvation. Scarlett Castiel, long thought dead, may be her ally. Together they uncover a dark conspiracy at the heart of high society.