Synopsis
Nagisa is an ordinary schoolgirl with typical morning habits: waking up late, rushing to school, and meeting friends along the way. One morning, she notices a woman in a strange uniform staring at her, which makes her uneasy. Later that day, while looking out the window, Nagisa sees a ball bouncing on its own before it hurtles toward her, shattering the window glass but leaving her unharmed. When she turns back to the front of the classroom, she finds a gaping, tooth-filled mouth inches from her face, and the room is empty. She screams, and suddenly everything returns to normal—she is standing, and her classmates are staring at her in confusion, wondering why she screamed.
