The Holy Grail of Eris manga volume 10 features story by Kujira Tokiwa and art by Yu-nagi and Hinase Momoyama.

Thanks to Deborah's machinations, Abigail, who was working to prove Aldous's innocence in the case of Aisha's murder, is arrested by the Royal Military Police as a material witness. Connie, feeling guilty for implicating Abigail and worried that she might be executed, heads to Folkvangr with Scarlett and Randolph to formulate a rescue plan. Will they succeed at stopping Abigail from meeting the same fate as Scarlett ten years prior…?