The Pursuit of Knowledge! I'll Definitely Get Stronger!!!

Now that Sasuke is in safe hands, Naruto and Jiraiya can continue their search for Tsunade. When they arrive at a city with a festival on the way, Jiraiya and Naruto have some fun, at least until Naruto puts a stain on a man's shirt. Jiraiya uses a new technique that easily defeats the man and offers to teach it to Naruto. What is this new technique and can Naruto master it?