Ask for the name of a supernatural novel

The male protagonist had a physique that attracted spirits and could expel evil spirits, but his self-protection ability was not strong. In the process, he met people who followed and protected him (one of them seemed to be a policeman). In fact, their relationship seemed to be related to the male protagonist's background. They were destined to be his protectors. There were two stories that he remembered. One was that he was invited to help get rid of the evil spirit in an ancient castle, but he forgot the details. The other was that he was invited to a school. It was about a boy who was bullied and ignored by his classmates. Then, with the help of the evil spirit, he became a demon and tortured and killed his classmates one by one. The male protagonist later used talismans to make models of his classmates and placed them in the classroom. The boy tortured and killed all of them. After the boy took the opportunity to take revenge, his resentment decreased. The male protagonist and the others expelled the evil spirit from the boys and then got rid of it. However, there were only two stories up to this point. They had just dug out a little bit about the male lead's background through the spirit-removal case, but unfortunately, they did not read the rest. (It should be an older book, published in 2007) Alas, it's a pity that I forgot all about it She only remembered that it was a book she was reading. It was very good. She was depressed that she didn't continue reading it back then ~ I've seen it before, but I haven't seen the Road of the Wronged Ghost, but it's not either ~