Eris no Seihai

The Holy Grail of Eris / エリスの聖杯
Eris no Seihai
Genres: Mystery, Supernatural, Villainess
Themes: Villainess
Studios: Ashi Productions
Producers: Good Smile Film
Popularity: #9367
Users Listed: 4,693
NSFW: No
Last Updated: 07/06/2025
Aired: January 1, 2026 (Winter)
Type: tv
Source: Light Novel

Synopsis:

In a society governed by political maneuvering and deceit, House Grail stands apart for its unwavering commitment to honesty. Constance Grail, the youngest of the family, embodies this principle through her compassionate nature and dedication to fairness. Her life is irrevocably altered when betrayal and false accusations shatter her trust in those closest to her.

When societal indifference leaves her with no recourse, Constance finds an unlikely ally in Scarlet Castiel, a spectral entity burdened by a past injustice. Bound to Constance, Scarlet offers a path towards retribution against those who orchestrated her downfall a decade prior. However, this pact comes with significant consequences, forcing Constance to navigate a morally complex landscape as she aids a vengeful spirit in seeking justice. The series explores themes of loyalty, sacrifice, and the blurred lines between right and wrong when confronted with systemic corruption.

Trailer:

Characters:

  • Castiel, Scarlett (Main) - Voice Actors: Suzushiro, Sayumi
  • Grail, Constance (Main) - Voice Actors: Ichinose, Kana
  • Orlamunde, Lily (Supporting) - Voice Actors: Ichimichi, Mao
  • Ulster, Randolph (Supporting) - Voice Actors: Azakami, Youhei

Staff:

  • Morita to Jumpei (Director)
  • Morita, Yuuichi (Sound Director)
  • Yamashita, Kenichi (Script, Series Composition)
  • Kanbara, Yuuko (Director of Photography)
  • Kawaguchi, Chie (Character Design)
  • Sano, Yuriko (Editing)
  • Sue, Nobuhito (Art Director)
  • Tokiwa, Kujira (Original Creator)
  • Yamagami, Aiko (Color Design)
  • Yukawa, Jun (Character Design)
  • Yuunagi (Original Character Design)

Forum Topics:

Related Anime/Manga:

  • Eris no Seihai (manga - Adaptation)