Another

Another is based of from Yukito Ayatsuji's novel Another. In 1972, Misaki, a popular student of Yomiyama North Middle School's class 3-3, suddenly died partway through the school year. Because they loved Misaki so much, the students and teachers behaved like Misaki was still alive which  led to a strange presence on the graduation photo. A boy named Kōichi Sakakibara transfers into class 3-3. Class 3-3 is cursed and once the curse stars one student each month will die, ad there is no set number of family members that will die each month of that student. After Learning these deaths have something to do with the Misaki of 1972, Kōichi and Mei try to discover a way to stop the deaths. They learn that every year there is an extra person in class 3-3 which is the person that died in 1972, but no one knows who the dead person is and the person that's dead does not know their dead. They learn the only way to stop the deaths once they've begun is to send the extra person back to death. Because of Mei's fake doll eye she can see death, so she knows who the extra person is. In the end it turns out that Kōichi's aunt, and class 3-3's deputy homeroom teacher is the extra person, because she died a year and a half ago. Koichi was the one to kill her, ending the deaths for another year.