The Holy Grail of Eris
Also known as: Eris no Seihai / エリスの聖杯
The Holy Grail of Eris is a TV series by Ashi Productions that premiered in Winter 2026. It is finished airing with 12 episodes of about 24 minutes each. Genres: Drama, Fantasy, Mystery, Romance, Supernatural. Average AniList score: 6.9/10.
Synopsis
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 Scarlett Castiel—who possesses Constance and turns the tables on her accuser. However, this aid does not come without a price.
Ten years ago, Scarlett was executed for the attempted murder of Princess Cecilia. But this was actually a setup; as blunt and harsh as Scarlett could be, she would never stoop so low as to use poison. She has no idea who orchestrated her incrimination, but Scarlett demands that Constance—as the only one who can see her—help her exact revenge on all those who wronged her!
(Source: MAL Rewrite)
The Holy Grail of Eris episodes
- Episode 1: At the Grand Merillian — aired January 8, 2026
- Episode 2: An Extraordinary Villainess and an Ordinary Girl — aired January 15, 2026
- Episode 3: Respective Answers and Beginnings — aired January 22, 2026
- Episode 4: The Silent Ladies` Tea Party — aired January 29, 2026
- Episode 5: And the Cock Crows to Herald the Dawn — aired February 5, 2026
- Episode 6: The Command of the Goddess — aired February 12, 2026
- Episode 7: A Banquet of Insectivorous Plants — aired February 19, 2026
- Episode 8: Lily Orlamunde — aired February 26, 2026
- Episode 9: The Holy Grail of Eris — aired March 5, 2026
- Episode 10: For the Future — aired March 12, 2026
- Episode 11: Those Who Defy Fate — aired March 19, 2026
- Episode 12: The Final Chapter: At the Grand Merillian — aired March 26, 2026
Main characters
- Scarlet Castiel (Main) — voiced by Sayumi Suzushiro
- Constance Grail (Main) — voiced by Kana Ichinose
- Cecilia Adelbide (Supporting) — voiced by Maaya Uchida
- Randolph Ulster (Supporting) — voiced by Youhei Azakami
- Lily Orlamunde (Supporting) — voiced by Mao Ichimichi
- Enrique Adelbide (Supporting) — voiced by Natsuki Hanae
- Dominic Harmsworth (Supporting) — voiced by Jun Fukuyama
- Adolphus Castiel (Supporting) — voiced by Kousuke Toriumi
- Kate Lorraine (Supporting) — voiced by Hika Tsukishiro
- Deborah Darkian (Supporting) — voiced by Chiwa Saitou
Anime like The Holy Grail of Eris
- May I Ask for One Final Thing? (2025) — ONA
- Tearmoon Empire (2023) — TV series
- 7th Time Loop: The Villainess Enjoys a Carefree Life Married to Her Worst Enemy! (2024) — TV series
- The Apothecary Diaries (2023) — TV series
- Secrets of the Silent Witch (2025) — TV series
- Villainess Level 99: I May Be the Hidden Boss but I'm Not the Demon Lord (2024) — TV series
- Why Raeliana Ended Up at the Duke’s Mansion (2023) — TV series
- I'm the Villainess, So I'm Taming the Final Boss (2022) — ONA
Genres: Drama, Fantasy, Mystery, Romance, Supernatural · Season: Winter 2026