The Black Wolf

Kasen Gray has been followed for most of his life by a wolf that no one else can see. After realizing that no one believed him and being told it's all in his head, he found it was best to keep the secret to himself and call his strange behavior a mental illness instead.
Kasen is now seventeen, and the secret is becoming too dark and heavy to keep hidden, and his best friend Juniper has taken notice of his constant state of exhaustion and fear. He can't keep the wolf under control for much longer, and with Juniper getting closer, the wolf is becoming unexpectedly violent. The only thing worse than it lashing out at him is it lashing out at his best friend who he's falling in love with.
The wolf is changing. That much Kasen knows.
But at this point, he isn't sure if he can keep Juniper and himself alive.