Catataninfoku -- The Holy Grail of Eris (Japanese: Erisu no Seihai) is a fantasy suspense series that blends political intrigue, supernatural elements, and complex character dynamics. Below are five of the most prominent characters fans will encounter in both the light novel and upcoming anime adaptation, detailed with traits and roles you can search for online.
1. Constance Grail
Constance, often called “Connie,” is the central protagonist of the series. She is the sincere and kind-hearted daughter of the low-ranking noble Grail family, known more for honesty than influence. Her life changes dramatically when she is publicly humiliated, loses her fiancé, and faces false accusations—until she is unexpectedly aided by Scarlett’s spirit. Constance’s determination to clear her own name and assist Scarlett drives the narrative forward.
2. Scarlett Castiel
Scarlett is the infamous noblewoman executed ten years before the story begins under false charges of poisoning royalty. Now a ghost with a sharp mind and haughty disposition, she possesses Constance to save her from disgrace, forming an unusual but powerful partnership. Scarlett’s quest to uncover the truth about her execution and the intrigues behind it is a core thread of the story.