Something some ninja never really figured out. But Sasuke was a genius wasn't he? If only things had turned out different. But Kakashi had learned the hard way 'if only's didn't do anything.

That cold look was nothing new, though for a brief time...He inwardly gave himself a shake. Dwelling would do him no good. He let out a sigh and took a few steps towards Sasuke, mostly to see what the other would do.

"No, we don't."