[As soon as Kaname gets a whiff of the familiar blood, he has the same idea as Akatsuki, and follows the smell until it takes him to a vampire and his cat sitting on a bench together.
So, his instincts were right. Aidou did return. And during a period of time when Sentience is out of commission. Kaname doesn't try to pretend that he understands how most things work in this underwater world, but he is genuinely perplexed. Perhaps the computer is able to function in certain modes on auto pilot, even when it isn't working fully. Or maybe it is able to plan the comings and goings of people far enough in advance so that they will continue to arrive and disappear in it's absence.
Stepping forward, Kaname approaches slowly from behind the bench. His scent is probably noticeable, but he doesn't try to make his presence obvious. When he is close enough to touch Aidou, he reaches out and rests a hand on the noble's shoulder.]