u/Cephalo_Kayum

Orochi thought Sasuke needs a rival just as he was driven more when Jiraiya trained for Senjutsu.

It was impossible for Naruto to get into a location we don't expect him to be familiar with.

There was only one way for Naruto to know it exists before he actually plans on entering and how to do it.

Orochi was not surprised that a student has blonde hair and blue eyes at the age exactly one would expect about 12 years after the Kyubi attack and everyone knows who the jinchuriki is.