Reikoku Naru Hyoutei no, Tsuma de Gozaimasu ~Gimai ni Kon'yakusha wo Oshitsukerareta kedo, Igai to Kawaii Kare ni Dekiaisare Shiawase ni Kurashiteru~

Summary

A cruel fate ties them together—will hatred melt into love? Feria, the duke’s daughter, was born without the “Blessing of the Spirits,” a gift everyone else possesses. Branded a failure and scorned by her peers, she nevertheless perseveres as a scholarship student at the royal magic academy. One day, her selfish younger stepsister Celestia refuses her arranged betrothal. Without hesitation, their father offers Feria as a substitute bride. Seizing the chance to sever ties with her hateful family, Feria accepts—only to find her fiancé is none other than Arseif, the kingdom’s strongest knight, feared as the “Coldhearted Ice Emperor.” From disdain to destiny, an unexpected bond begins to take shape… (Sana Scans) https://www.cmoa.jp/title/331148/