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The Holy Grail of Eris

2026 · Series · 1 season · ★ 7.4

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Plot, cast and details

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.

Rated TV-14Animation Mystery Sci-Fi & Fantasy

Kana IchinoseConstance Grail (voice)
Sayumi SuzushiroScarlett Castiel (voice)
Yohei AzakamiRandolph Ulster (voices)
Mao IchimichiLily Orlamunde (voice)
Maaya UchidaCecilia Adelbide (voice)
Natsuki HanaeEnrique Adelbide (voice)
Jun FukuyamaDominic Harmsworth (voice)