Oh hey look more Itachi angst. I'm such an angstwhore.
Be glad I don't own Naruto, or else the series would be named Itachi. (Actually that sounds kind of awesome.)
Sometimes, as a ninja, your mind is so completely overwhelmed that it simply goes away, leaving your body to act on instinct and years and years of training to kill. Some things are
death, war, murder, torture, blood on your hands and the bodies of children
too horrible for a sane mind to take; although he has heard it said that no ninja is truly sane. Even so, he had expected it to be harder. Killing somebody you don't know, well, that becomes easier after a while
easier to do, but harder afterwards. You can kill and kill and kill without a pause, but afterwards, when you're alone, oh, god
but killing your family, that should be hard. It's not fair, it's not right for it to be so damn easy. They open their doors to him, even though he's covered in blood
but then, he's always covered in blood, isn't he
they welcome him in, and when his sharingan starts to spin they don't have time to act because even Uchihas are human in the end.
His parents open the door. His mother takes one look at him and tries to usher him upstairs for a shower, scolding him for not washing at ANBU HQ. His father asks about his mission. Itachi draws his sword. They die without shock or fear on their faces: they never even realise he's an enemy.
It's not fair. It should be harder than this... But it's easy, so easy.
Sometimes, as a ninja, your mind is so completely overwhelmed that it simply goes away. Itachi wonders if it will ever come back.