Board Thread:Naruto Discussions/@comment-4271790-20141104021906/@comment-4912646-20141104195135

Rachin123 wrote: So if Minato would be 41 in Shippuden and Nagato and Konan were 35-36 that means Minato is 5-6 years older. So when Jiraiya went to them they were 1-2 years old. Three years later Jiraiya left them which means they would be around 5. Unless I'm off or Kishi messed up with the times there is no way this seems right.

We know for a fact that Nagato was ten before, during, or after being trained by Jiraiya. Most likely, Jiraiya actually trained Minato first, then trained the Ame orphans a few years later. The only solid evidence he trained the orphans first was that his red face markings were longer when he was shown with young Minato's team than they were when he trained the orphans during the second war. So it's only a really minor retcon.

Yahiko being 15 on the other hand, is unarguably a mistake. Hopefully just a printing error or something, because that would create way worse contradictions than even Obito's age does.