One day, living a tough corporate life, when I thought I just wanted to sleep comfortably. I picked up a plump mattress abandoned on the street. But starting that day, horrific sleep paralysis began! My horror...

What happened in the classroom that night !? Kitahara, the Nanjo High School homeroom teacher of class 2-C, is involved in an unbelievable incident triggered by the disappearance of a female student, Tomoe...