Quick Transmigration: The Vicious Female Supporting Character Steals the Male Lead Every Time

Transmigrate Into a Vicious Supporting Female Character

Offering a big reward for this kind of story: I once read one where the female lead transmigrated into a book and obediently got together with the male lead to stay alive. Later, she transmigrated to his high school days, and he found someone just like himself to wait for him to come back. I can't remember the title.