01/08/2026 - 03/26/2026 Finished
The Holy Grail of Eris (Eris no Seihai)
Also known as: エリスの聖杯
It is common knowledge that nobles will do anything for power; lying, manipulation, and extortion are the usual tactics. However, one family is exempt from this generalization: House Grail, whose main tenets are truth and integrity. The youngest daughter, Constance Grail, is just as moral as the rest of her family, believing in always doing the right thing and helping those in need. However, these ideals do not help her when her fiancé cheats on her with another woman. Framed by his lover in the hope of her downfall, Constance has no one to hear her pleas for justice. Everyone turns a blind eye, save for one—the spirit of the infamous Scarlet Castiel—who possesses Constance and turns the tables on her accuser. However, this aid does not come without a price. Ten years ago, Scarlet was executed for the attempted murder of Princess Cecilia. But this was actually a setup; as blunt and harsh as Scarlet could be, she would never stoop so low as to use poison. She has no idea who orchestrated her incrimination, but Scarlet demands that Constance—as the only one who can see her—help her exact revenge on all those who wronged her!
12
Total episodes
12
Canon episodes
0
Filler episodes
0%
% Filler
Canon episodes · 12 Filler episodes · 0
Watch on: Crunchyroll
Related works
Related works and sequels
Standalone work
No sequel, prequel, or registered spin-off is linked to Eris no Seihai. Its episode total belongs to this title alone.
What to watch, what to skip
Watch order: filler vs canon
Eris no Seihai has no filler episodes: all 12 episodes are canon. You can watch it from first to last without checking any list of skippable episodes.
Episode by episode
Complete guide by season
12 Episodes
| # | Episodes | Aired | Type |
|---|---|---|---|
| 1 | At the Grand Merillian01/08/2026 | 01/08/2026 | Canon |
| 2 | An Extraordinary Villainess and an Ordinary Girl01/15/2026 | 01/15/2026 | Canon |
| 3 | Their Respective Answers and Beginnings01/22/2026 | 01/22/2026 | Canon |
| 4 | The Silent Ladies' Tea Party01/29/2026 | 01/29/2026 | Canon |
| 5 | And the Cock Crows to Herald the Dawn02/06/2026 | 02/06/2026 | Canon |
| 6 | The Command of the Goddess02/13/2026 | 02/13/2026 | Canon |
| 7 | A Banquet Of Insectivorous Plants02/20/2026 | 02/20/2026 | Canon |
| 8 | Lily Orlamunde02/26/2026 | 02/26/2026 | Canon |
| 9 | The Holy Grail of Eris03/05/2026 | 03/05/2026 | Canon |
| 10 | For the Future03/12/2026 | 03/12/2026 | Canon |
| 11 | Those Who Defy Fate03/19/2026 | 03/19/2026 | Canon |
| 12 | The Final Chapter: At the Grand Merillian03/26/2026 | 03/26/2026 | Canon |
Verified legal platforms
Where to watch The Holy Grail of Eris
All the platforms where you can watch The Holy Grail of Eris legally, with direct links to each service.
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Common questions
Frequently asked questions
How many seasons does Eris no Seihai have?
Eris no Seihai has a total of 1 season. The series is completed. Each season is divided into multiple episodes with stories that advance the main plot of the anime.
How many episodes does Eris no Seihai have?
In total, Eris no Seihai has 12 episodes in its only season. You can consult the complete episodes table to see the breakdown by season.
What is the best order to watch Eris no Seihai?
It is recommended to watch Eris no Seihai in chronological broadcast order. This means starting from season 1 and continuing sequentially to the last season. Check our watch order guide which includes information about filler vs canon episodes for an optimal experience.
Where can I watch Eris no Seihai online?
Eris no Seihai is available on the following streaming platforms: Crunchyroll. Check the platforms section at the top of this page to access where you can watch the anime. Please note that availability may vary depending on your geographic region.
Watch on: Crunchyroll
Is Eris no Seihai a complete anime?
Yes, Eris no Seihai is a completed anime. All seasons have already aired and you can enjoy the series in its entirety without waiting for new episodes.
Where can I see Eris no Seihai's score and reviews on MyAnimeList?
You can check the score, reviews, characters and statistics for Eris no Seihai directly on MyAnimeList, the world's largest anime database. There you'll find the community rating, global ranking and opinions from other fans.