The Holy Grail of Eris
S01 · E01
Overview
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.
Trailer
Cast
Kana Ichinose
Constance Grail (voice)
Sayumi Suzushiro
Scarlett Castiel (voice)
Yohei Azakami
Randolph Ulster (voices)
Mao Ichimichi
Lily Orlamunde (voice)
Maaya Uchida
Cecilia Adelbide (voice)
Natsuki Hanae
Enrique Adelbide (voice)
Frequently Asked Questions
Is The Holy Grail of Eris available to watch online?
Yes, you can stream The Holy Grail of Eris free on StreamVaults in HD — no sign-up required.
When did The Holy Grail of Eris first air?
The Holy Grail of Eris first aired in 2026.
What genre is The Holy Grail of Eris?
The Holy Grail of Eris is a Animation, Mystery, Sci-Fi & Fantasy series.
How many seasons does The Holy Grail of Eris have?
The Holy Grail of Eris has 1 season with 12 episodes total.
What is The Holy Grail of Eris rated?
The Holy Grail of Eris has a TMDB rating of 7.1/10 based on 21 reviews.
What is the status of The Holy Grail of Eris?
The Holy Grail of Eris has ended.
