Darenimo Aisarenakatta Shuuwai Reijou ga Shiawase ni Naru made

Amelia was born unwanted. As an illegitimate daughter of a noble house, she spent her days starving—surviving on weeds plucked from the garden. Mocked as the "Filthy Lady" in high society, shunned by her family, and stripped of her dignity... she never expected anything from the world. Until one day, a marriage proposal arrives. Her fiancé? None other than Duke Logan—the infamous "Brutal Duke" feared by all. Why her? What does he want? And can a girl who's only ever known cruelty... survive a love that feels just as dangerous?

(Source: Overlap, translated)