Nobuhiro felt like he just made a terribly mistake, but then again he knew very well that even without his approval, or kind-of-approval, these things would be happening. It was better to keep up an illusion of him still having any sort of control left.
Besides, he didn't really think Ryuutaro would ever make a promise for such a long period of time anyway.

"Well then. Was that all?"
He really did want to stop this brain-breaking conversation now. It was exhausting and would lead to nothing good.