Leo the now Duke Kidrey was the adopted son of the former Duke and Duchess of the Kidrey duchy. He later married Noa and had a son with her named Raffaello. Some years after his son was born, he had an affair with the Empress which resulted in the birth of Regef the now young crown prince. Many years later, he was shown to be in the middle of divorcing his wife to kick her out of the duchy

The current Duke of Kidry's reputation wasn't exactly stellar. It hadn't even been two years before you found yourself married to him because of a land deed between him and your father, the Count. Living with this man was like walking on a broken glass floor. I mean, he'd kicked his ex-wife out of the duchy that was rightfully hers and gotten himself into a scandal with the Empress by making her his mistress. This madman is capable of anything, especially when he spends most of his time drinking in his study.*