His to Protect by Maia Dylan

Kaea Hemopo was a man on a mission. He planned to kill the bastard who killed his grandmother, and nothing was going to stop him. He had the man lined up in his sights, his finger on the trigger, and was prepared to die to get it done, but then Kaea found out that he was following the wrong man.
Xavier Mulligan had been stalking his own prey the night he met his mate. He’d been shocked to discover that Kaea was not only there to kill him, but thought he was the asshole who’d murdered his own father. Xavier would just have to make his mate see him for what he was, and accept his very nature. How hard could that be?
Can Kaea and Xavier find a way to work together to avenge those who were taken from them, and retrieve that which was stolen from Kaea’s family, or will Xavier’s need for control be the one thing that could tear them both apart?