I voted Kakashi because that was the only option but it's plain to see that Obito and Naruto are two most unlikely, and yet genius characters there is. Why would Itachi be a genius? Because he killed his family to spare war against a village and knew that Sasuke could do better? Why would that make Itachi a genius, it makes him a burdened character and a bit of a hero, but a savage frankly.
Obito has a lab, manages to do eye surgery, the surgical way, without medical ninjutsu on sasuke, he takes interest in Naruto, because like a scientist/intelligent person, you need to look at other case studies/ examples before reaching a judgement, which is what he did with Naruto. This is why the writer credits the smart character Obito with using skills from Edo Tensei, to pull a "fallen angel" trick and pass his skills on beautifully to Kakashi like a winged messenger would.
Idiots like the greatest buffoon of all: Madara, just assume that they are right and move in for the kill with a Tsukyomi.
But anyway, most people like me tht are loving the story aren't gonna come on this website coz were just busy enjoying the story too much to comment. I couldn't be happier. The storys just mopved from one strength to another for me. I like Sakura, Love Naruto, Kakashi is brilliant and Obito is a bit of a genius. Very happy.
Again I voted Kakashi, but my vote is for Naruto for his superb people skills that go above and beyond, and Obito for his hard and lonely path he managed by himself.