Hayden did not stop biting until he tasted blood in his mouth.

…

It was four o'clock in the evening. The school had called Avery telling her that Hayden had bitten someone and requested her to go to the school.

Avery did not understand. Hayden was the only student in his class. Since he did not have any classmates, who could he bite? Was it the teacher who got bitten? With the possibility in her mind, Avery quickly shut down her computer and took her keys with her.

'How could Hayden bite his