Lol, I don't understand. All you people that say Jiraiya is the strongest, It's simple to kill him. You say, "Tsukiyomi." Don't you dare say that he'd break out because he can't. It's been said and proven multiple times that only someone with a tailed beast or the mangekyou sharingan can break out of Tsukiyomi. And only someone with Sharingan can resist it at all, I slightly confused as to why Itachi didn't just kill everyone lol, He could keep people in Tsukiyomi for as long as he wanted. Although I have no idea as to who Lain is, and correct me if I'm incorrect, but, Tsukiyomi is like Lain's ability except Tsukiyomi affects a single person. Itachi can do anything he wants to you while you're in it, keep you under its affect until the strain on his eyes becomes unbearable (which won't happen because Tsukiyomi is only 1 second in real life), and kill you pretty easily. Although, Itachi have most likely gone blind eventually, which he did. So his foolish little brother who was told to run and run, and cling to life, And then to despise Itachi ended up killing the only person who actually liked him lol, Except Naruto.