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)

When her country of Lidea loses the war, Princess Tinalia must wed the enemy prince, Keith. The arrangement isn't as dire as it sounds, though: after all, Tinalia has been in love with Keith for years! Unfortunately for her, Keith doesn't remember they already know each other. The circumstances of their first meeting were unfortunate, as their countries were at war, and Lidea committed too many atrocities against his people to forgive. Thus, Tinalia finds herself the hated bride of the crown prince, treated coldly and scornfully by everyone around her... even though she continues to love him with all her heart. (Source: TOKYOPOP)

"Sister Mashiro, tell me you love me." Mashiro lives as a "powerless" person without any special powers in the prestigious Amamiya family, and is treated harshly by her mother, while her father treats her like air. Her talented stepbrother Hiiragi is her only support. One day, Mashiro begins to see mysterious images in fragments. Eventually, she realizes that these are images of the future, and that her special power is "future foresight," but it was just delayed in manifestation. She is shaken by the frequent images of herself being embraced by her stepbrother, she even sees a future in which she is killed by him--!? https://www.cmoa.jp/title/314401/