Books in the A Ridiculous Royal Tale series

Princess Nkoyo is twenty months into a happy and loving marriage to her soulmate, Prince Onen of Atam Kingdom. Then she begins having nightmares of wars in the wild era of slave eradication, connected to the vintage ring traditionally handed down to all first sons of Atam Kingdom for their wives. The ring has chosen Nkoyo to reveal what was and should be. The past will have its say with visions of a forbidden love story between Nnanke and Okoi-a priestess meant only for the gods and an escaped slave simply seeking a way home to his motherland. But does it hold the key to saving the future of Atam Kingdom?