His KA is programmed to "protect Konoha".
It wouldn't do shit unless you know the truth about Itachi.
All it will do is make them wanna protect Konoha. People who say KA are either idiots or trolls.
No. Anyways KA belongs to Naruto now, he unintentionally solo'd itachi neg diff. #550 Fact!
i agree ppl commenting about KA one shotting anyone are probably just joking around .
but Itachi did use KA although it was in Naruto's stomach, Itachi placed it there and it still did exactly what he programmed it to do, which was to activate at the sight of his Mangekyo Sharingan. Naruto didn't use it, Itachi used it, (or the crow did) Itachi just placed it into Naruto forcefully which is a great trick actually. He finger genjutsu'd Naruto & placed KA inside him in the real world.
Programming Kotoamatsukami:
Itachi can program Kotoamatsukami as easily/ whenever he wants.
He programmed Amateratsu in Sasuke's eyes to activate at the sight of Obito's sharingan in a matter of seconds with just the touch on Sasuke's forehead.(his blood dripped in Sasuke's eye). So why wouldn't it be just as easy to program Kotoamatsukami in battle.
Kotoamatsukami wasn't always programmed with the Protect Konoha command because Itachi is the one who programmed it, but he didn't always own the KA eye. He got it from Shisui, so it wasn't programmed when Itachi first got it.
these Itachi versus battle threads and any of the versus threads aren't specifically imagined after certain canon events takes place unless stated otherwise. KA is apart of Itachi's arsenal just as Kabuto's edo are apart of rinnegan war Tobi's pre juubi jinchuriki stage.