I Seduced the Deceitful Duke

Maria fulfills her duties as a guild member while hiding her identity as a fallen count's daughter to make a living.
One day, she receives a request from her to break up the wedding of the Duke of Berry Winter.

"This marriage is invalid! I... have the Duke's child!"

At Maria's shocking declaration, the wedding hall became agitated and she was just about to leave,

"Baby, why are you so late?"

The Duke of Berry Winter calls me that during our first meeting...?

Will Maria, who has suddenly become the duke's wife, be able to fulfill her wealthy dream?

(Source: Naver, translated)