The omake of episode 147. (:
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The last naruto episode (not shippuden) is Naruto Episode 220
episode 58 its really naruto shippuuden episode 58!
I am thinking that it is Naruto episode 79 the last episode of 4th season.
Naruto learns to use Wind Release: Rasenshuriken in Naruto Shippuden episode 88. The episode is called "Wind Release: Rasenshuriken!"
Naruto summons Gamabunta at the very end of Naruto episode 56, but they introduce themselves to each other in episode 57