While Yuuhi hadn't truly expected to pass through the barrier so easily, the fact that he did was in his mind, only further proof that the doctor was telling the truth. And much as he might despise himself for it, it wouldn't be the first time he'd made deals with men that might cause his friends to brand him a traitor. His memories of childhood were hazy in places, but he was sure enough of the deals he'd made to escape the prison he and Fai had been placed in. He'd said then that he'd do whatever it took to bring his brother back. Repeating that in his mind now was the only thing that made it any easier not to look back when he was sure that Kurogane and Tsubaki had to be angry with him.

Though it was also the fact that he was through the barrier now, and the only one to do so, that was enough to make every nerve in his body warn him of how dangerous it was. But he had a feeling the rest was true too. That the doctor could easily injure them without the force field in place, though whether or not the others believe that was a different matter entirely.

What was truly curious was the offer. The fact that the man in control, the one with all the power over them in the first place, was willing to make a deal with them and dangling something as enticing as freedom in front of them. Even if he couldn't save Fai just yet, being free could mean the possibility of helping the king.

"What is it?" he asked carefully. Something so valuable wasn't going to come without a price. While he knew he'd do anything to save the people who were important to him, he couldn't seem too eager, too desperate for what the man might offer.