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The Holy Grail of Eris (2026 – present)

8.5 | Jan 08, 2026 (JP) | Animation, Mystery, Sci-Fi & Fantasy

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.

No. of seasons
1
No. of episodes
12

Cast

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Kana Ichinose
Constance Grail (voice)
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Sayumi Suzushiro
Scarlett Castiel (voice)
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Yohei Azakami
Randolph Ulster (voices)
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Mao Ichimichi
Lily Orlamunde (voice)
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Maaya Uchida
Cecilia Adelbide (voice)
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Natsuki Hanae
Enrique Adelbide (voice)
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Jun Fukuyama
Dominic Harmsworth (voice)