Mondaina Koushaku-sama no Saiai ni Naru made

Until I Win the Heart of the Problematic Duke / Duke Willer was known as the "Empire's Greatest Playboy," a man who seemed destined never to marry. That is, until he finally tied the knot... or rather, was forced into marriage against his will. To make matters worse, his new bride is a "deadly serious" woman who cares for nothing but her work. Can this cynical Duke really be won over? Watch as he falls head-over-heels for this capable, steady young lady!