Scion's Lady — Rebecca Bradley

Tig never wanted to be a hero. And after using the powers of the magical artifact known as the Lady in Gil to destroy the barbarous Sherkin Empire, he is quite willing to return to his quiet and peaceful life as a scholar...

Unfortunately for Tig, his brother, the new Priest-King of Gil, has arranged a marriage for him. When Tig begins his honeymoon voyage with the beautiful but dim Princess Rinn, he realizes that the union is not all it seems. And as Tig is threatened by unseen enemies, he discovers that the Lady in Gil, thought destroyed along with the Sherkin Empire, is not as broken as everyone believes. And she has her own plans for Tig...