TV series · Film information

The Holy Grail of Eris

2026★ 7.4 / 10

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.

AnimationMysterySci-Fi & Fantasy

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EPISODE 1

At the Grand Merillian

Constance Grail attends a party only to find her fiancé kissing another woman and herself accused of a crime.

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EPISODE 2

An Extraordinary Villainess and an Ordinary Girl

The ghostly Scarlett demands that Constance repay her help by avenging her death.

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EPISODE 3

Respective Answers and Beginnings

Constance and Scarlett follow a tip to a masked ball with a sinister reputation.

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EPISODE 4

The Silent Ladies' Tea Party

Constance receives a summons from an investigative committee determined to put her on trial.

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EPISODE 5

And the Cock Crows to Herald the Dawn

Constance's carriage suffers a shocking attack and an even more shocking rescue.

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EPISODE 6

The Command of the Goddess

Both Constance and Randolph uncover fresh clues, but Lily's last message remains shrouded in mystery.

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EPISODE 7

A Banquet of Insectivorous Plants

Daeg Gallus contrives to murder Aisha before she can reveal the truth and cast suspicion on Abigail.

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EPISODE 8

Lily Orlamunde

Constance, Scarlett, and Randolph discover a letter that reveals Lily's struggle and the truth she uncovered.

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EPISODE 9

The Holy Grail of Eris

Scarlett possesses Constance to confront her own father.

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EPISODE 10

For the Future

Constance, Scarlett, and Randolph pursue the kidnapped Ulysses and stumble into a shootout.

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EPISODE 11

Those Who Defy Fate

Constance is jailed on her own testimony and given a sentence of death.

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EPISODE 12

The Final Chapter: At the Grand Merillian

As the hour of Constance's execution approaches, Scarlett finds a crucial document and Cecilia makes her move.

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About this series

Production information and credits.

Release: 2026-01-08. Production countries: Japan. Original language: JA.

Featured cast: Kana Ichinose, Sayumi Suzushiro, Yohei Azakami, Mao Ichimichi, Maaya Uchida, Natsuki Hanae, Jun Fukuyama.

Official trailer

Trailer supplied through the film’s public catalogue listing.

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