[ Kakashi dips his head slightly in response, at the thanks. Sasuke doesn't need to thank him for anything, though it's nice, knowing that Sasuke at least can appreciate this gesture, even if it's years late. ]

With what's going on back in our world...

[ He's careful not to say home, because he knows Konoha hasn't been home for Sasuke in a long, long time. ]

I thought it would be good for you to know. That one-- [ He nods his head towards the scroll Sasuke had not yet opened. ] -- can be a bit tricky. Takes practice. But I'm sure you'll be able to figure it out.