A boy is initially overjoyed at the news of him having an older sister, due to his father remarrying to a woman who has a daughter. That is, until he finds out that his new sister is actually his school's strict PE teacher, Shina. With his father going off to live with his new wife, the boy will live with alone with his new sister. In their new life together, the boy finds out that Shina at home is completely different from Shina at work: clumsy, scared of insects, and kind.
Ano Oni Kyōshi Ga Boku No Ane Ni Narundesuka?
Synopsis Ano Oni Kyōshi Ga Boku No Ane Ni Narundesuka?
Alternative ¿Esa profesora demoníaca es mi hermana? ; Ano oni kyoushi ga boku no ane ni narundesuka? ; Guru Killer Itu Akan Menjadi Kakak Perempuanku? ; Is that demon teacher my sister? ; That Demonic Teacher Will Be My Sister? ; あの鬼教師が僕の姉になるんですか？
Author Hina Hime Nekomata Nuko