The Holy Grail of Eris
Seen it?2026 | 1 seasons | Animation, Mystery, Sci-Fi & Fantasy
Weeknight Watchearly ratingWhy it’s a Weeknight Watch
With a small audience, it's a mixed bag. Fine if it's on; don't plan your night around it.
Based on critics, audiences, awards, box office and buzz. Details below.Is it for you?
- Who'll love it
- Made for anyone who likes to be kept guessing, sci-fi fans and animation lovers.
- The mood
- Tense.
- The pace
- 1 season: a few weeks of evenings.
- What might put you off
- Rated TV-14: scary moments. Probably too much for younger kids.
- It's in Japanese, so expect subtitles (or a dub).
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.
How it earned its rating
- CriticsNot counted
Not enough reviews on record yet
- AudiencesNot counted
Not measured yet: not enough ratings
- AwardsNot counted
Award season hasn't happened yet, so this isn't counted.
- Reach & staying powerWeak
Limited series that reached a small audience so far
- Buzz & cultural impactSolid
About 106K people sought it out in the past year
Trailer
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Cast & crew
- 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)