He closes his eyes and dreams of a world running red with blood. He dreams of his classmates dying as he laughs, and the moon looks over it all calmly. He wakes and goes through the motions, around classmates that are so childish, so easy to fool. He takes notes in class until the pencilmarks turn to blood and run off his desk. His seatmate is daydreaming, her head tilted to the side (he could stick a pencil in her jugular and no one would know)
Nagisa Shiota of Class D listens to his teacher, and and behind closed eyelids, dreams of death.