The Holy Grail of Eris poster

TV Series

The Holy Grail of Eris (2026)

Not enough TMDB votes yet to show a reliable user score (24 votes).

Where to watch Trailer Compare

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.

Where to watch The Holy Grail of Eris

Stream with a subscription

  • Crunchyroll
  • Crunchyroll Amazon Channel

See all viewing options in United States

Streaming data by JustWatch via TMDB. WatchFilms is not affiliated with any streaming service and does not host video.

Official trailer

Play: Official Trailer [Subtitled]

The video loads from YouTube (privacy-enhanced mode) only after you press play.

Seasons

Series cast

  • Kana Ichinose Kana Ichinose Constance Grail (voice) 12 episodes
  • Sayumi Suzushiro Sayumi Suzushiro Scarlett Castiel (voice) 12 episodes
  • Yohei Azakami Yohei Azakami Randolph Ulster (voices) 12 episodes
  • Mao Ichimichi Mao Ichimichi Lily Orlamunde (voice) 12 episodes
  • Maaya Uchida Maaya Uchida Cecilia Adelbide (voice) 12 episodes
  • Natsuki Hanae Natsuki Hanae Enrique Adelbide (voice) 12 episodes
  • Jun Fukuyama Jun Fukuyama Dominic Harmsworth (voice) 12 episodes

If you like The Holy Grail of Eris

Recommendations from TMDB

Similar shows

Matched on genres and keywords by TMDB

More TV shows like this: Animation, Mystery, Sci-Fi & Fantasy, from Japan