The Ice Witch and the Shadow Fairy

As in every story, there is always a villain who wishes to separate the protagonists. In this tale, it is Katerina Rosesky. She was considered the "saint" of the temple from a young age and was educated as a future empress. However, after the arrival of the protagonist, her life falls apart, losing everything, including her own life, as she becomes obsessed with the prince and attempts to kill the protagonist.
But now, Celine has reincarnated as Katerina and, determined to change her fate, renounces her engagement to the prince and seeks out the great duke of Plezayes, Arek Shadows, the second protagonist, who descends from the Dark Fairies. She promises to help him ascend to the throne and avenge those who murdered his parents, only if he names her his empress. Will Arek accept this alliance?