Forum:Naruto's eyes

During the Hidan and Kakuzu arc, Naruto encounters Kakuzu with different shaped eyes. They have the usual blue but are shaped like the one’s he has when he is in the Nine Tails (mode) unleashed (Red Eyes).

Also strange is Yamato’s comment to Kakashi that he is about to see a total new naruto, and naruto’s strategic actions.

Whats behing these unusual shaped blue eyes?