The Holy Grail of Eris (2026)

SERIES

20261 Season7.4

Animation, Mystery, Sci-Fi & Fantasy

TMDB7.4

Votes24

Your rating

Genre: Animation
Certificate: TV-14
Origin: JP

About

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.

Where to watch

Region

Stream

Crunchyroll

Crunchyroll Amazon Channel

Availability from JustWatch via TMDB.

Details

Status: Ended
First aired: Jan 8, 2026
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
Studio: Ashi Productions, Good Smile Film

Time to finish

9 hrs

12 episodes. About 2 weeks at an hour a night.

View on IMDb ↗

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)

If you like this

SERIES

20261 Season7.4

Animation, Mystery, Sci-Fi & Fantasy

TMDB7.4

Votes24

Your rating

Genre: Animation
Certificate: TV-14
Origin: JP

About

Where to watch

Region

Stream

Crunchyroll

Crunchyroll Amazon Channel

Availability from JustWatch via TMDB.

Episodes

0 of 0 watched

E1 · Airs Jan 8, 2026 · 23m · ★ 6.7
At the Grand Merillian
Constance Grail attends a party only to find her fiancé kissing another woman and herself accused of a crime.
E2 · Airs Jan 15, 2026 · 23m · ★ 7.0
An Extraordinary Villainess and an Ordinary Girl
The ghostly Scarlett demands that Constance repay her help by avenging her death.
E3 · Airs Jan 22, 2026 · 23m · ★ 7.0
Respective Answers and Beginnings
Constance and Scarlett follow a tip to a masked ball with a sinister reputation.
E4 · Airs Jan 29, 2026 · 23m · ★ 6.7
The Silent Ladies' Tea Party
Constance receives a summons from an investigative committee determined to put her on trial.
E5 · Airs Feb 5, 2026 · 23m · ★ 7.0
And the Cock Crows to Herald the Dawn
Constance's carriage suffers a shocking attack and an even more shocking rescue.
E6 · Airs Feb 12, 2026 · 23m · ★ 7.0
The Command of the Goddess
Both Constance and Randolph uncover fresh clues, but Lily's last message remains shrouded in mystery.
E7 · Airs Feb 19, 2026 · 24m · ★ 6.0
A Banquet of Insectivorous Plants
Daeg Gallus contrives to murder Aisha before she can reveal the truth and cast suspicion on Abigail.
E8 · Airs Feb 26, 2026 · 23m · ★ 6.3
Lily Orlamunde
Constance, Scarlett, and Randolph discover a letter that reveals Lily's struggle and the truth she uncovered.
E9 · Airs Mar 5, 2026 · 23m · ★ 7.3
The Holy Grail of Eris
Scarlett possesses Constance to confront her own father.
E10 · Airs Mar 12, 2026 · 23m · ★ 7.3
For the Future
Constance, Scarlett, and Randolph pursue the kidnapped Ulysses and stumble into a shootout.
E11 · Airs Mar 19, 2026 · 23m · ★ 6.7
Those Who Defy Fate
Constance is jailed on her own testimony and given a sentence of death.
E12 · Airs Mar 26, 2026 · 23m · ★ 7.7
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.

Details

Status: Ended
First aired: Jan 8, 2026
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
Studio: Ashi Productions, Good Smile Film

Time to finish

9 hrs

12 episodes. About 2 weeks at an hour a night.

View on IMDb ↗

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)

About

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Time to finish

Cast

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About

Where to watch

Episodes

Details

Time to finish

Cast

If you like this

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