At one point, Shirogane might notice that he's being watched. And followed, depending on if he's moving at the moment that he notices. There's a boy of maybe six, not hiding but still kind of invisible with how still and quiet he stands. He's not nearly perfect at not being noticed though, not enough practice. There is a smile on his face, as if watching someone move furniture around fills him with great joy.

And actually, it does. Not so much the actual activity of the footman, though it is interesting enough to observe, but the being around someone. Ivan prefers for the people that he is around not to know that he is, because that way he won't be sent away, and even if they don't know it feels like company. He likes being around people, he likes it being lively or at least as lively as possible. It keeps him from feeling lonely.