Why did Father jojo's brother kill Father Jojo?

When Pucci's younger brother was young, he unconsciously fell in love with his sister. The priest hired a private detective to break them up, but the detective was a racist. He killed the weather forecast's sister and almost killed the weather forecast. Later, the Pucci brothers woke up in the body double. In order to prevent the weather forecast from getting out of control, Pucci took away some memories of the weather forecast, which led the police to put the crime of killing his sister (Pucci's brother) on the weather forecast and put him in prison for 15 years. The new hatred and old hatred are superimposed, so that the weather forecast takes killing the priest as its living purpose.