Originally Posted by jekyl_hyde
There is a very good possibility that uzumakinagato is correct about the plothole, along the timeline (who would have imagined that). It all depends on the amount of time between the 2nd and 3rd shinobi wars.
@ bolded: There are 7 years of peace between the Second and Third Wars (Tsunade left Konoha at age 27, 27 years ago, and it happened shortly after the Second War and Sasori killed the Third Kazekage 20 years ago). Nobody knows when the Second War started, but 35 years ago, when Nagato used his Rinnegan for the first time, it was already ranging. Also, the Third War lasted 4 years.
All that information confirms there's at least 18 years between Nagato awakening his Rinnegan and the current flashback. Hardly "shortly after his death", but I'll check the kanji to confirm if it's what's said or not.