The Holy Grail of Eris poster

The Holy Grail of Eris

20261 Season12 Episodes
AnimationMysterySci-Fi & Fantasy

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.

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About The Holy Grail of Eris

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.

Network / Platform
MBS
First Aired
08/Jan/2026
Language
Japanese
Schedule
—

Latest Episodes

View All
S1 E12The Final Chapter: At the Grand Merillian26/Mar/2026 • 23m
S1 E11Those Who Defy Fate19/Mar/2026 • 23m
S1 E10For the Future12/Mar/2026 • 23m
S1 E9The Holy Grail of Eris05/Mar/2026 • 23m
Next Air TimeNot announced

Air-time details have not been announced.

TimeScore33%Skip It
Binge Meter48%Slow Burn
Episode PulseQuiet40% activity
Drop Rate0%Very Low
Progress and ratings use your EpisodeTime account
Season 10 / 12 watched
S1 E1At the Grand Merillian08/Jan/2026 • 23m
Not rated
S1 E2An Extraordinary Villainess and an Ordinary Girl15/Jan/2026 • 23m
Not rated
S1 E3Respective Answers and Beginnings22/Jan/2026 • 23m
Not rated
S1 E4The Silent Ladies' Tea Party29/Jan/2026 • 23m
Not rated
S1 E5And the Cock Crows to Herald the Dawn05/Feb/2026 • 23m
Not rated
S1 E6The Command of the Goddess12/Feb/2026 • 23m
Not rated
S1 E7A Banquet of Insectivorous Plants19/Feb/2026 • 24m
Not rated
S1 E8Lily Orlamunde26/Feb/2026 • 23m
Not rated
S1 E9The Holy Grail of Eris05/Mar/2026 • 23m
Not rated
S1 E10For the Future12/Mar/2026 • 23m
Not rated
S1 E11Those Who Defy Fate19/Mar/2026 • 23m
Not rated
S1 E12The Final Chapter: At the Grand Merillian26/Mar/2026 • 23m
Not rated

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Production Details & External Links

Database information and official source references.

Status
Ended
Country
Japan
Runtime
—
External
TMDb · — · IMDb
Full cast and crew
Kana IchinoseConstance Grail (voice)Sayumi SuzushiroScarlett Castiel (voice)Yohei AzakamiRandolph Ulster (voices)Mao IchimichiLily Orlamunde (voice)Maaya UchidaCecilia Adelbide (voice)Natsuki HanaeEnrique Adelbide (voice)Jun FukuyamaDominic Harmsworth (voice)Michika KurematsuArt DesignerNguyen Hoai Thanh QuocArt DirectionNobuhito SueArt DirectionYuuki HatakeyamaArt DirectionYuko KamaharaDirector of PhotographyMorita to JumpeiSeries DirectorYuriko SanoEditorSeiji MiyazakiExecutive ProducerAyana TanabeProducerFumihiro OzawaProducerHiroto UtsunomiyaProducerKeiko TokudaProducerMasakatsu KatoProducerSatoshi FukaoProducerTatsuro WataraiProducerTomoko FujimuraProducerTomoyuki OhwadaProducerYoujin FukushimaProducer
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