Beat the story mode! you'll get other things as well.

Naruto: Konoha Spirits unlockable Characters:

During the Loading screen if allocated enough time to move the right thumbstick enough in a circle. A Blue Chakara Ball will pop-out and if you notice your unfilled Stamina / Chakara Bar. It will refill a little about 25% worth everytime you do this. Between Loading screens with the Konoha Symbol in the lower right corner

kick or punch on head they stop attacking to you if all character unlock and 4th hokage yondaime.

It's not very helpfull but when you see the loading screen, if you have enouge time spin the left analong as fast as you can!!if you spinned enouge a blue orb will pop-out!! this make that in avery cuple of minuts you wil get a little tiny extra to your chakara. (by the way, it works in Uzumaki Ninden/Chronicles aswell!)

NOTE: this glitch can only be done with Naruto.

***WARNING!!.Only advanced players that good in controling the game and combos should do this!!!***

If your very strong and kill an enemy in 2 or 3 shots but it makes bored,then heres a way to to do weaker attaks and torcher your enemy to have some fun!.

First, do a Kage Bunshin No Jutsu, then quiekly go with the kage bunshins and attack the anemy with them. If you did right you'll notice that your attacks got weaker and sometimes (if your not enouge strong)it goes to 1!!.

Now enjoy torchering your enemies!.
HAHAHAHAHHAH!!!!:)