Becoming a Demon Lord in the Demon Realm (Through the Book)

Gu Changjiu wore a book, and it was the book "The God" written by himself. The character he wears is still the biggest villain in this book, the Demon King... This villain also abuses the ungrown protagonist... Gu Changjiu remembered that the Demon Lord met a tragic end... He was torn into pieces by the protagonist's five horses! ! So the first thing to do is to please the protagonist, or to please the protagonist! ! Later, Gu Changjiu really pleased the protagonist! But what do you mean by asking me to be your wife? Labor and management are straight men! ! Later... Fu Jue: Madam~ Gu Changjiu: Get out! Labor and management have backache! Fu Jue: Okay, let's get into bed! ! Gu Changjiu: ………… This is my first time writing, please give me your advice! Don't spray if you don't like it! !