There were no eternal friends in this world, nor eternal rivals. An enemy one day can be your closest companion tomorrow, while vice versa also happens a lot, more so in a family.
A brother killing a brother, a son killing a father and even more heinous cases of familicide were common all over, more so in the family of nobles. This is why each child of a noble grew up hating each other, with barely a few that can be deemed close, and even then, it's mostly due to benefits.
That was the case in the family of Alahrun, which belonged to the lands of Azad. The so-called name didn't mean it was truly free; the strong still ruled it, and the weak lived day by day, wondering if tomorrow would be it.
That's how the third Son of Alahrun grew up. Unlike his two older brothers, he was born very late in the family and can be considered pretty young compared to his brothers, who already had grandkids by then. And being someone who didn't share a mother also made things troublesome for him.