Spoiler 1 (Kotoko's point of view):
Kotoko was the granddaughter of a famous exorcist. She can see ghost , but she can't exorcise them even though she pretend that she can. Until then, she saw Kuro (main character) being stuck with many evil spirits and accidentally she saw him in evil mode. ( I really can't describe this evil mode , so I just took the photo to make you understand. )
|The quality is rather bad , cause I took it with my phone.|
In the forest , Kotoko was being attacked by kappa, fortunately , she was being saved by Kuro. He told her that, that kappa had a disease so , he will try to cure it and told it to release their classmate. Kotoko confused and ask him who he is .. Kuro can't help it but to tell the truth to Kotoko that he was a Ghost Doctor.