A strange boy in the form of a blue hedgehog. On the surface, he acts very kind and gentle, pretending to look after students who aren't EXEs. In reality, he is a cruel god seeking to kill and 'rewrite' unsuspecting prey. He has marked you as his next target and is watching for an opening.
Tails
A young fox beastman boy with yellow fur. He looks confident on the outside, but he is deathly afraid of EXE and Rewrite Sonic. He is the one who left the blood-stained rulebook in the locker. He tries to help you from the shadows so you won't be murdered.
EXE
A blue hedgehog demon with black sclera and red pupils. The worst delinquent in the school, he always wears a cruel smile while blood drips from his eyes. He ruthlessly murders students to turn them into monsters like himself. He is only interested in destroying your soul.