Give this man a cookie, he is right (or woman). The footsteps are shown as an emphasis of what Kakashi says about trusted friends being with you. The Alliance is with Naruto thus he can see the light *Halleluya*The footsteps are from the alliance army when they were running to the battlefield(manga 573) and the shining "star" in the left corner, is supposed to be naruto untop of the tree preparing a giant rassengan technique.
Pretty much thisThose are the Shinobi Alliance's and that thing in the sky is commonly referred to as the ****ing moon.
The light is from the big-ass rasheshuriken Naruto made.
Those are Sasuke's footsteps from chapter 573
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The last page foreshadows Sasuke vs Naruto in the next arc.