Kratos stood slowly, taking in what had been revealed. They were to stay here. Here on Olympus, with it's bright, shining temples and green malls and noisy peacocks. They were to stay here, far from the cool, soothing dimness of the Underworld. Without their mother.
Kray had thought that whatever happened, she would be with them. Of course, he knew, she had her own duties to attend to. She was very important; a person's word, their oath, needed to mean something or it had no worth. She ensured that. She had other jobs as well, and he recognized the need for them, but he was proudest of her for her dedication to upholding oaths. So he couldn't and wouldn't fault her for staying true to her responsibilities. He'd just thought they'd be going back to her, somehow.
But no, they were to stay here. And do... something. Despite the honesty of Zee's answer, Kratos knew what the king was truly asking them. He wasn't asking what they wanted to do. He was asking what they could do for him. If they were going to stay here, on their own, then they would have to earn their keep. Or continue to earn their keep, since they'd been fighting for him in the war. Did he want them to keep fighting? Kray knew that sometimes people misunderstood his abilities and thought he liked fighting, but he didn't. And he really didn't want to do it anymore if he didn't have to. But he'd do whatever it took to stay with his siblings.
Though he was usually quiet and let his older brother and sister speak for all of them, Kratos cleared his throat slightly. He was nervous, but it was more that he didn't want his voice to crack when he spoke. “Our abilities,” he said quietly, echoing his brother's sentiments, “work best together. We...” he paused, wanting to use exactly the right word. “We amplify each other. We... compliment each other. We can serve you best if we serve together, sir.”
He just really hoped that serving didn't involve him having to hurt people anymore.