Naruto: Season 4, Episode 160

4 - 160: Hunt or Be Hunted?! Showdown at the O.K. Temple!

Turns out Sazanami is really a wanted criminal named Toukichi who is wanted for the murder of a family of three. Truth is however, he's innocent, and wants to capture the man responsible to prove it! Sazanami teams up with the Konoha group to stop Gosunki once and for all....