Batsu 3 no Mitori Fujin to Yobareteimasu no de Suteoite Kudasaimase

As a means of repaying her family's debt, ever since she was young, Cornelia has been married off to elderly aristocrats to care for them in the little remaining life they have left. Nicknamed the, "Caregiving Wife," by those in high society, she has already given up on finding a happy marriage. However, as she visits the ducal household of her 3rd husband, she meets a young and handsome gentleman?!