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The Holy Grail of Eris poster
TV series · 2026

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.

AnimationMysterySci-Fi & Fantasy 7.4 / 10
Play S1 E1
Released2026-01-08
Seasons 1 seasons / 12 episodes
StatusEnded
Rating7.4 / 10 (24)
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S1 E1 · 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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  1. Episode 1 · 23 min · 2026-01-08At the Grand Merillian

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

  2. Episode 2 · 23 min · 2026-01-15An Extraordinary Villainess and an Ordinary Girl

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

  3. Episode 3 · 23 min · 2026-01-22Respective Answers and Beginnings

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

  4. Episode 4 · 23 min · 2026-01-29The Silent Ladies' Tea Party

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

  5. Episode 5 · 23 min · 2026-02-05And the Cock Crows to Herald the Dawn

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

  6. Episode 6 · 23 min · 2026-02-12The Command of the Goddess

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

  7. Episode 7 · 24 min · 2026-02-19A Banquet of Insectivorous Plants

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

  8. Episode 8 · 23 min · 2026-02-26Lily Orlamunde

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

  9. Episode 9 · 23 min · 2026-03-05The Holy Grail of Eris

    Scarlett possesses Constance to confront her own father.

  10. Episode 10 · 23 min · 2026-03-12For the Future

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

  11. Episode 11 · 23 min · 2026-03-19Those Who Defy Fate

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

  12. Episode 12 · 23 min · 2026-03-26The Final Chapter: At the Grand Merillian

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

Starring

Kana Ichinose · Sayumi Suzushiro · Yohei Azakami · Mao Ichimichi · Maaya Uchida · Natsuki Hanae · Jun Fukuyama

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