Fantasy drama anime The Holy Grail of Eris today announced a January 8, 2026 at 23:56 JST premiere date for Japanese television, unveiled a new key visual and confirmed theme song details. Reina Washio performs "Happy Ever After feat. YU-KA" for the opening and Yukari Tamura ( Love After World Domination OP) performs "Camellia" for the ending. The Holy Grail of Eris Key Visual The cast of The Holy Grail of Eris includes: Scarlet Castiel voiced by Sayumi Suzushiro Constance Grail voiced by Kana Ishinose Randolph Ulster voiced by Yohei Azakami Lily Orlamunde voiced by M.A.O RELATED: The Holy Grail of Eris Anime Reveals Lily Orlamunde Character Art JUMPEI & MORITA ( LOST SONG ) directs The Holy Grail of Eris anime at studio Ashi Productions, with series composition by Kenichi Yamashita ( The tale of outcasts ) and character designs by Chie Kawaguchi ( Fruits Basket animation director). Yen Press publishes Kujira Tokiwa and Yu-nagi's original light novels and describes the story: As a viscount’s daughter, Constance Grail is an ordinary girl whose only notable trait is sincerity, leaving her with no real options when someone steals her fiance and falsely accuses her of petty theft at a ball. While Connie awaits her undeserved punishment, a ghost appears to offer a bargain. The spirit is none other than Scarlett Castiel, a noblewoman once praised for her beauty, lineage, and undeniable charisma-and executed some ten years earlier for her wicked deeds. When Connie accepts this proposal, she is possessed by the infamous spirit who instantly turns the tide on her tormenter, thus saving the hapless girl from her miserable fate. It’s never wise striking a deal without knowing exactly what you’ve committed to, though…or you might find yourself bound to a ghost dead set on revenge against her own enemies! Source: Comic Natalie
