TRAPPED

Kira was only two years old when she met the Prince and six years old when she was married off to him. She was then isolated to be trained to be a good wife and Queen while he was trained to be a warrior and a leader, the two never Iiving together or even seeing each other.
He then went abroad for studies,.
When he comes back he is supposed to take her in as his wife, she is now in her early twenties and ready to be his queen. But what happens when he returns home with another woman and claims he doesn't want her?
What happens when a rival king is sniffing around but the prince cannot easily release her?