I'm Getting Married by Contract with My Child's Father

'''One day, while living as a single mother in the countryside, pretending to be abandoned by a man in order to protect a child I picked up off the street. I suddenly realized. That this place was inside a childcare-themed novel, and I was the role of the female lead's mother who dies early on! ‘Please, save the mother too.’ I know it’s a childcare novel, but I’m a person too, a human being! So, I made a deal with the cold-blooded Duke, who becomes the female lead's father in the original story, but…… “Let’s get married.” “What?” “I don’t see why you’re surprised. Didn’t you say so yourself? That you wanted a contract marriage.” How could I not be surprised? I never heard that he w...