I Will Divorce the Female Lead's Siscon Brother

Edel possesses her favorite novel and marries Liena’s older brother.
I thought we would naturally become a family, but that’s just my imagination.
I asked for a divorce because I was tired of my cold husband, who only cared about his younger sister, and couldn’t be separated from her.
“Divorce? Absolutely not. Wasn’t it good when we were in a relationship?”
“Sister-in-law, think about it again!”
Unlike in the past, I am determined now.
“Then, can I get the mine back, which is my dowry?”
“Wait a minute, sister-in-law.”
There’s no need to think about it again.
But my husband comes from a powerful duke family.
I need the help of the villain from the original story.
“Who on earth gave you a hard time?”
Isn’t this man too precious to be hurt by Liena……?
“The only person I want to have by my side is you, Edel.”
……by your side?