Loss Maiden

Teiichi experiences Yuuko's life 60 years ago where she live with her sister Yukariko Kanoe, Kirie's grandmother. Despite a plague killing the townsfolk, Yuuko continue taking care of Asa, a young girl whose family was killed by the plague, believing everything will get better. However, Yuuko and Yukariko eavesdrops a meeting between the sick town elders, who believe the plague was punishment by the gods for building the school over a destroyed shrine. To appease the gods, the elders plan to sacrifice a young child and hide it by claiming the child was another victim of the plague. Fearing for Asa's safety, the Kanoe sisters bring her into their home but Asa is kidnapped when the sisters went bathing which Yuuko runs to the school to save her. Asa, who is forced by the elders to play the role of Akahito to choose a sacrifice, unknowingly chooses Yuuko. The hysterical elders grabs Yuuko and throw her into the underground shrine, sealing the entrance.