The Holy Grail of Eris manga volume 8 features story by Kujira Tokiwa and art by Yu-nagi and Hinase Momoyama.

According to Scarlett, during the attempted assassination of Crown Princess Cecilia, the earring that pinned the crime on Scarlett was switched out with a fake. And the most likely suspect to have made the fake earring is Scarlett's fan—Aisha Huxley. Connie heads to the Huxley mansion to hear what she has to say, and despite Aisha's best efforts to keep her secrets, she's driven into a corner by the girl-and-ghost duo. At last, the truth about Scarlett's execution ten years ago will be revealed, and the meaning behind Lily's cryptic message shall also come to light…