Board Thread:Versus Debates/@comment-26636534-20180205153025/@comment-34678409-20180302183302

Another two senses. Tsukuyomi only requires eye contact. It really doesn't matter if Menma's head is in another dimension. If eye contact is made, the technique can be cast. Amaterasu is sort of instant. The flames appear instantly, however only after the charge up of the technique. Or in other words, the user has to gather whatever needed to use it, while their eyes tend to bleed at times, then release the flames. However, I don't see Itachi using these techniques so early in a fight.