maybe its lie the guy said you have to concentrate chakra in your left eye for three days but since kakashi is so strong and all he made up some way to like do it in a few seconds
That's a good idea. I'd be sad though to see Itachi doing all these things against his will
Please read the thread (especially if it's just 2 pages -_-) before you post to avoid repeating ideas. xXxSasuke and I just had a pretty good debate about this.