Oh well. 9S is doing enough to keep him company even if for a little while. He can't very well complain.

Now that he's peeling again he can focus on that instead of looking 9S over and getting into that investigation of his own curiosity. He can always have time for that later.

"As long as I want. I won't die from old age." It's not as if they are immortal. It's just they don't die from normal means. Someone would have to kill him.