Our Contract Marriage Was Supposed to End in Divorce, but the Callous Duke Is Obsessed With Me

Mira, who grew up in an orphanage, was born with the ability to absorb magical powers and was forced by her father-in-law, Baron Weston, to purify miasma-tainted swords and magical tools. As a result, her body was so ravaged that doctors told her she would not live more than a year. One day, Mira collapses in the temple and is saved by a beautiful woman, Annalise. Her brother, Darius, is the first duke and head of the Order of the Holy Knights, but he suffers from a disease called hypermagia. Annalise proposes a certain way to save her brother in exchange for saving Mira from the baron... (Source: MangaPlaza)