The Holy Grail of Eris

Name: エリスの聖杯
Genre: Drama, Fantasy, Mystery, Romance, Supernatural
Released: 2026-01-08
Cast: 鈴代紗弓, 市ノ瀬加那, 月城日花, 斉藤貴美子, 千葉翔也

エリスの聖杯

Eris no Seihai

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TypeTV series

Aired2026-01-08 〜 2026-03-26

SeasonWinter 2026

Episodes12

Runtime24 min

StatusFinished

SourceLight novel

Animation studioAshi Productions

ProducersBS11, Bushiroad Move, Drecom, Good Smile Film, Hakuhodo DY Music & Pictures, KLOCKWORX, LDH JAPAN, Medicos Entertainment

Score69/100

Overview

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)

Source: AniList

Synopsis 日本語

子爵家の令嬢、コンスタンス・グレイルは負債を背負った家を救うために資産家の貴族の息子と婚約するが、彼女を嫌っていた令嬢に婚約者を寝取られた上、策略に嵌められて盗人にされてしまう。誰も助けてくれないことに絶望したコンスタンスだったが、彼女の耳元で「助けてあげる」と誰かが囁いた。瞬間、彼女の人格は別人のものになる。謎の声の主は10年前に処刑された公爵令嬢、スカーレット・カスティエルだった。希代の悪女と罵られながら殺されたスカーレットは亡霊となって彷徨っていたが、コンスタンスという依り代を得て復活、歴史の闇に葬られた真実を探る。

Source: Wikipedia「エリスの聖杯」 (CC BY-SA 4.0)