A Day Alone in School

Mima falls asleep in the school library during the day and wakes up alone after 6 PM. What begins as a simple problem - just find the exit - quickly becomes something far darker. The school she walks through every day transforms at night into something unrecognizable. Doors open by themselves. Corridors loop impossibly. A faceless girl stands motionless in the hallway. Something inside the gymnasium knows her name.
When Mima finally finds safety in the library, a mysterious book appears from nowhere - with a message written specifically for her. And even after she escapes, the horror follows her home.