She Has the Eyes of Death

Thya, the daughter of Duke D'Arcy, has the cursed power of being able to see others people's deaths by looking at them in the eye. After all the disgrace that happened to the people around her, she sees her best frien, Avyanna, the next Queen of the Maximillian Kingdom's dying because of a uncurable disease, but she can't tell that to anyone.

When her best friend ends up dying a year after that, her brother, Daisuke, ascends to the throne as the new Crown Prince and is set to get his revenge on Thya for hiding his sister's disease from everyone and 'causing' her death. But Thya refuses to interact with anyone for years, blaming herself for having such ability.

Later on when the Crown Princess Trials are announced, Daisuke made his parents summon Thya so she is obligated to participate. But afraid that she might end up dying while spending a year in the Imperial Palace, she decides to look at herself in the mirror and confront her fear.

To her dismay, she saw her dying by Daisuke's dagger two years from that moment. And that puts her on edge. After all her efforts to runaway go to waste, she has to go and face her best friend's brother and sworn enemy.

But little did they know that hatred is the closest feeling to love.