Lee couldn't be in a different world? Sasuke came very close to snapping what a damn shame for you, it's a party for the rest of us -- the words were on the tip of his tongue when the second half of Lee's sentence registered. The war. There was a war going on at home, and barring some change that was truly enormous, there were only a few reasons that that could be happening.

Sasuke not only being an Uchiha but under the supervision of one who travelled in some of the most criminal elements in their world meant that he had a fairly good idea of where he was supposed to figure in that war, and it wasn't behind a Leaf standard. That meant that it made even less sense that Lee could be bothered to stir up righteous indignation about Sasuke's eyes, the other shinobi's weird notion of honour aside.

How far would that honour take him? The last time Sasuke had met Rock Lee in the Institute, they had been able to work together briefly but effectively, but that Lee had made no mention or war.

"We have not been brought here to be cured," Sasuke said finally, brusquely dismantling whatever illusions Lee might have believed about the place. "You will learn that once night falls."

As for further information -- Sasuke had not made a habit of withholding it until now, but circumstances were different between himself and Konoha now. Where there had only been distance was hatred, stunted and awkwardly-grown within the confines of the Institute but still real, still smouldering; the promises he had made to the Sannin were ones he intended to keep if possible, but they were promises made to a man who might not remember them even if he had returned.

"I will tell you about the Institute if you tell me about the war," he said, voice cool, deliberate. "What is happening in our world?"