Disclaimer: I own only my OCs...sadly
My great-grandmother was supposed to be his bride. However he fell in love with another. She didn't seem to mind, as she herself had someone she wanted to be with, but they were supposed to allied with the marriage. She gave him a choice, arrange a marriage between their two children. He declined so she thought of another way.
Tsukihime was a smart one. The best leader of the Okami Clan the she had led. She knew an alliance with the Nurahiyon would help her clan for generations, but he had chose someone over her. Not only that but he refused the arrange marriage she had proposed. However she wasn't the leader of her clan for nothing.
When the time came, the Supreme Commander's son was born. A year later, Tsukihime's daughter was born. In a spur of the moment, Tsukihime made a deal that seemed flawless too her. Let her daughter stay with the Nura Clan, growing up with the heir. Chances were high that he would fall in love with her and finally unite the two clans. It was killing two birds with one stone
Nurahiyon saw no fault in that. He wanted to give his son a chance to fall in love. Forced into a loveless marriage would be useless, but growing up with someone he could fall in love was better.
The time came, and Okami-Onna came in second. The heir fell in love with a human, just like his father, of all things! But unlike her mother, she did not have a lover. She did not have someone to love. The man she loved was in the arms of another. The heir was like a brother to her, but his best friend was the man she loved. A married man nonetheless.
It wasn't until a year later that Okami-Onna was wed off to someone in her clan. Someone that would help give a strong offspring. But it was a loveless marriage. My mother couldn't take it and ran away leaving me alone.
Now I carry the burden of my clan. Just like my mother, I was to stay in the Nura Clan, because another male heir was born. A boy by the name Nura Rikou. They believed that the third time would the be the charm to finally unite the two clans...but they were wrong.
He would never love me, like I loved him. Love is so cruel.