The television anime adaptation of The Holy Grail of Eris has released its third promotional trailer, spotlighting the energetic opening theme song and offering fresh glimpses into the aristocratic world of betrayal and supernatural intrigue.
This latest trailer prominently features the opening theme Happy Ever After feat. YU-KA, performed by Reina Washio, blending upbeat melodies with visuals of elegant ballrooms, tense confrontations, and the contrasting personalities of the two leads. It teases the high-stakes drama as an ordinary noblewoman teams up with a vengeful spirit to unravel a sprawling conspiracy in elite society.
Produced by Ashi Productions, the series is directed by Junpei Morita, with series composition and scripts by Kenichi Yamashita, character designs by Chie Kawaguchi, and assistant character designs by Jun Yukawa.
The Holy Grail of Eris is scheduled to premiere on January 8, 2026, airing late-night on TBS and its 28 affiliate stations across Japan, as well as on BS11. International audiences can look forward to simulcast streaming, ensuring global access to this captivating fantasy drama.
The talented voice cast brings depth to the ensemble: Kana Ichinose voices the honest and unassuming Constance Grail, Sayumi Suzushiro portrays the charismatic and sharp-witted Scarlett Castiel, Yōhei Azakami lends his voice to the enigmatic Randolph Ulster, and M.A.O embodies Lily Orlamunde. These performers, many reprising roles from prior promotional materials, promise nuanced performances that capture the emotional complexity of betrayal, redemption, and hidden truths.
Complementing the opening theme, the ending song Camellia is performed by veteran voice actress and singer Yukari Tamura, known for her evocative ballad-style contributions to numerous anime series. Earlier announcements have included striking key visuals, depicting the protagonists in dramatic poses against backdrops of luxury and danger, further heightening expectations for the visual storytelling.
The adaptation has been building momentum since its initial announcement in October 2024, with previous trailers and visuals gradually revealing the staff, cast, and premiere details. This third trailer serves as a final push, immersing potential viewers in the atmospheric blend of historical drama, mystery, and fantasy that sets The Holy Grail of Eris apart in the upcoming season.
What is The Holy Grail of Eris about?
The Holy Grail of Eris originates from a light novel series written by Kujira Tokiwa and illustrated by Yuunagi. The story was initially serialized online on the novel posting site Shōsetsuka ni Narō from 2017 to 2018, before being acquired and published in print volumes. It spans genres of mystery, fantasy, and drama, centered on themes of betrayal, societal intrigue, and supernatural alliances in a noble-filled world.
Crunchyroll describes the series as:
"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."
