After I Transmigrated into a Book, the Obsessive Crown Prince Clung to Me

I transmigrated into a tragic historical romance and became the Crown Prince's substitute for the woman he loved.

In the original story, the heroine would rather die than submit, and drowns herself in a lake. After the Crown Prince ascends the throne, he wipes out her entire family and rules so tyrannically that the nation falls.

Fine, I'll admit defeat and give in. As long as I keep this man happy, I can save the world.

But why is he getting crazier and crazier? He demands me night after night, and his obsession keeps growing worse.

When I try to find the woman everyone else calls his true love, I discover that she is actually me...

Theme: If the one you love lies beyond mountains and seas, the mountains and seas can still be crossed