Itachi Uchiha always looked at him fondly in the past, and when he pestered him to play or learn ninjutsu, he would wave to him, and when he saw him running over to him without any suspicion of deceit, he would poke him in the forehead unexpectedly.
Then said "Forgive me, Sasuke, next time."
And then... On the day when it rained heavily, he said
"Forgive me, Sasuke, there won't be a next time."
Intention: