Oin Junior and Senior High School (桜蔭中学校・高等学校) is a private girls' school located in Hongo, Bunkyo, Tokyo that provides six-year secondary education programmes...

Retrieved February 11, 2024. "The Kaisei Academy Official English Homepage | 開成中学校・高等学校公式サイト" (in Japanese). Archived from the original on December 8, 2023. Retrieved...