Mr. He, Your Secret Identity Is Showing

Historical Romance with a Groveling Male Lead

I forgot the title of a novel I read. The female protagonist was originally a princess and treated the male protagonist terribly, beating and insulting him. Later, she was reborn or transmigrated into a book and began treating him well. They even celebrated the New Year together and watched fireworks. But unexpectedly, on their wedding day, the male protagonist ran away with his younger sister.