Norowareta Kamen Koushaku ni Totsuida Hakkou Reijou no Tsukanda Shiawase

Lyfia, the daughter of an earl who has been oppressed due to her lack of magical powers, follows her father's orders to marry Orphen, the kingdom's greatest magician, who is shunned as the "cursed masked duke." Having been saved by him in the past, Lyfia's qualities as a "saint" awaken as she wishes to help him! As she breaks his curse, a happy married life begins in which she is doted on --!? (Source: B's Log Comic, translated)