I think sasuke cares about kakashi az his sensei Deep down but he's juz so hurt from his past and his brother,because when kakashi was talking to sasuke right after he was about to kill Sakura with chidori, kakashi tried to convince sasuke that there's still hope for him and that he still has people who love him. And I think sasuke wanted to believe it but the darkness consumed him and he went into denial. After kakshi said what he said sasuke breaks into the last form of susanoo (itachis susanoo). And it shuts off cuz he started to go blind. For kakashi to make sasuke go into the last form of susanoo i think that says a lot about them both. Think about it kakashi tought him chidori they had somewhat of relationship az student to teacher. And kakashi feels like it was all his fault that sasuke turned out the way he did. I juz feel like kakashi will play a big role in the war especially when sasuke appears.
P.S. with that said i jus think team 7 will be witness to the naruto vs sasuke fight. Not like there first naruto vs sasuke fight wen nobody was around.
P.S. with that said i jus think team 7 will be witness to the naruto vs sasuke fight. Not like there first naruto vs sasuke fight wen nobody was around.