The Holy Grail of Eris
A MBS Original
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
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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
Constance Grail (voice)
Sayumi Suzushiro
Scarlett Castiel (voice)
Yohei Azakami
Randolph Ulster (voices)
Mao Ichimichi
Lily Orlamunde (voice)
Maaya Uchida
Cecilia Adelbide (voice)
Natsuki Hanae
Enrique Adelbide (voice)
Jun Fukuyama
Dominic Harmsworth (voice)
Created by: Kenichi Yamashita
Seasons (1 season, 12 episodes)
Season 1
12 episodes - 2026