According to the information provided, I recommend a novel to you. The title of the novel is called " Demons Rise in the East." The main character is called Huangfu Xuan. He comes from the East and has special abilities such as wind, rain, thunder, and so on. His main goal is to kill demons and evil. Although I didn't mention that there was a woman calling for rain, recommending this novel might meet your requirements for the main character's name and region. I hope you like my recommendation.