Sasuke is putting on airs by pretending to be utterly uninterested in anyones well being outside of himself and Naruto. But we know this isn’t true, if Naruto’s reaction (and Sasuke’s character in general..) is anything to go by. The panel where Sasuke’s face is in profile, hidden, in response to Naruto’s recollection of their fight with Haku is telling. It’s obvious, It is shoved in our face. Sasuke is just putting on a tough act. One that Naruto can see through. Unfortunately, Sakura cannot at the moment, she’s still confused as about his motives.