Five-year age gap / older man / both leads are inexperienced / transmigrate into a book
After Fang Yaoguang transmigrates into a book, all she wants is to watch the leads get their happy ending, then quietly go home.
Instead, Fu Yanlin, the villain she shaped to match her ideal type, catches her by the wrist.
“You've been watching for so long. Aren't you going to write yourself a part in the story?”
She runs, and he pursues her at every turn. She refuses an arranged marriage, so he cuts in and takes her place.
The world's will forcibly erases their memories, but when they meet again, their hearts still pound deafeningly.
When her memories return, she looks at the man before her, the one who turned the entire script upside down for her, and finally bursts into tears.
It turns out the highest form of creation is letting the characters you write break free of their fate to love you.