Reborn for the Enemy King

Eira Chamberlain reborn. Past life: forced marriage with Aidan Pierce, became enemies. Kingdom fell, Aidan died, she committed suicide. After rebirth, she takes Rosalind's place in Alliance Marriage in Northern Marches. She and King Kaelen Huyan go from adversaries to spending lives together. Aidan Pierce learns truth, regrets, tries to win her back but is rejected. Eira and Kaelen live peacefully. After Kaelen's death, Eira returns with Aidan, and they both pass away.