Ep. 10: Teiichi menyaksikan masa lalu tragis Yuko yang melibatkan wabah, pengorbanan, dan kematiannya yang damai.

Teiichi experiences Yuko's life sixty years ago, where she lived with her sister, Yukariko Kanoe, who is Kirie's grandmother. Despite a plague killing the townsfolk, Yuko continued taking care of Asa, a young girl whose family was killed by the plague, believing everything will get better. However, Yuko and Yukariko eavesdrop on a meeting between the sick town elders, whom 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 cover it up by claiming the child was another victim of the plague. Fearing for Asa's safety, Yuko and Yukariko bring her into their home, but Asa is kidnapped when the sisters went bathing, which Yuko 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 Yuko. The hysterical elders grab Yuko and throw her into the underground shrine, sealing the entrance. As she slowly bleeds from a broken leg and her cries for help unanswered, Yuko dies peacefully, refusing to blame anyone for her fate, glad to know Asa and Yukariko were safe. However, this leads to the birth of Yuko's shadow, who hates her for not blaming anyone, including the elders for her death and herself becoming a ghost with no memories of her past. (Source: Wikipedia)

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