Mirei Kashiwagi

Mirei Kashiwagi (柏木 ミレイ Kashiwagi Mirei) is Setsuna's kind-hearted older sister who become Setsuna's guardian after the death of their parents. Mirei has sacrificed everything and tried her best to take care of Setsuna, even borrowing money from a loan shark to pay for hospital fees. When Kanna and Rena appeared, she was in tears over the fact that her brother was able to make friends. Mirei has offered their home to Kanna and Rena but is still completely unaware of Setsuna's imminent death.Until the near end of the series and is sadden believing she will be the cause of his death until the zombie princess tells her she can cure him so he can live a normal life.She also seems to have excepted but Kanna and Rena are oni and tried to eat her brother,since they care for him.