Beginning to Become an Immortal and Meet a Mortal Empress

(No system): The protagonist becomes an immortal directly at the beginning. What system is needed? He becomes an immortal first and then enters the world. Is a system needed? (Single female protagonist): It is easier to write a pornographic novel with multiple female protagonists, and it is easier to write a eunuch novel without a female protagonist. A single female protagonist is more suitable. It is more satisfying to torture one than to torture a group of people. (All Heavens and All Realms): The world of the book is very large. It is based on the South China Sea Continent, which affects all heavens and all realms, and finally leads to a decisive battle on the top of the gods and earth. (Theme): The theme is resistance to oppression. Although the protagonist fights for the heroine, the core conflict is the oppression of heaven, and the story of those who are able to resist with swords. (What else): Probably nothing