After I Transmigrated into a Book, I Got Together with Long Aotian

Emperor Descends is a male-oriented fantasy novel. Early in the story, there's a passage that goes: "I heard there's a student in the Huang Class who looks like a girl, so beautiful she could topple kingdoms. Want to go take a look?" Gu Shiyuan transmigrates into a book as that student. With his extraordinary looks, ordinary family background, ordinary abilities, and even more ordinary talents, Gu Shiyuan is little more than a pretty vase of a background character. So he decides to latch onto the main character, a domineering dragon of a man. But why is this strong, dependable thigh getting more and more proactive the longer he clings to it? Transmigrated-into-a-book beauty with a soft, sweet personality as the uke X the original story's domineering main character as the seme Theme: Sincerity deserves sincerity