Naruto's 'somedays' are promises. They have to be, because someday gets so unattainable, so far out of his reach that his fingers can only grasp empty air, so far away he can barely see his goal. He loses himself a little then.
Someday, he will be Hokage. It's a promise.
For Sasuke, 'someday' is fact, a definite point in time. If he will never be able to kill Itachi, what's all the effort and the sacrifice and the hate for? No, Itachi will die by his hands. He has to, because if he doesn't, he has nothing more to live for. And when he does…. For all his planning for his someday, Sasuke has no idea what to do when Itachi is dead. He can't pick up the pieces of his old life; he destroyed the puzzle pieces, the ones that could never have fit together again, long ago.
Someday, he will kill Itachi. It is a fact. It is a godsend and his greatest fear.
Sakura only ever said her 'somedays' half-heartedly, a quiet, mumbled reassurance. Someday she will get stronger—maybe. Someday she will be there when it really counts, when they really need her. But that hope slipped away as her teammates got stronger, as she lay on a bench, tears stuck to a frozen expression, as the boy she loved ran away. Ran away from her.
Sakura has no more somedays. She lives in the present, pushing herself past all the barriers her doubt had created, farther than anyone could have expected. No, she has no more 'somedays,' no more distant dreams for the future.
She tightens her hand into a fist, feels the strength in that grip. She lives the dream now.
