Misao had been missing for three months when Aki awoke to the sound of their classmate's voice. Most of their peers thought Misao to be dead. When a mysterious earthquake shakes the school Aki goes to, they and their classmates - as well as their homeroom teacher Mr. Sohta - are teleported into another dimension. Aki's classmates blame Misao's Curse and Aki sets out to collect the six missing parts of Misao's body to break the curse. (Misao Wiki)