The protagonist, Reita, woke up one day in the classroom, and realized that he was all alone. Feeling completely strange and invaded by a feeling of desolation, he began to walk the corridors of the school. He finds himself there with totally inexplicable things.

The protagonist, Reita, woke up one day in the classroom, and realized that he was all alone. Feeling completely strange and invaded by a feeling of desolation, he began to walk the corridors of the school. He finds himself there with totally inexplicable things.