"A New Training Begins: I Will Be Strong!" (修行開始 オレはぜってー強くなる!, Shugyō Kaishi, Ore wa Zettē Tsuyokunaru!) is episode 86 of the original Naruto anime.
Guy decides to take Sasuke back to Konoha, and tells Jiraiya to hurry up and find Tsunade. Naruto adamantly states that they will. Naruto's determination impresses Guy, who bestows upon Naruto a green jumpsuit that Lee wears. On the way to search for Tsunade, Naruto asks about her. Jiraiya tells him that she is one of the Legendary Sannin alongside him, and that she is also famous for being a poor gambler. At the same time, Tsunade decides to partake in gambling at Machijūtoba, a casino where the big bets are made. Tsunade uses all of her cash, exciting the head gambler as he is aware of her reputation.
Meanwhile, Naruto enjoys a day out on the town while Jiraiya does some investigating into Tsunade's whereabouts. Naruto reveals that he has saved up a lot of money and plans to use it during the festival; Jiraiya takes away his savings, advising Naruto that it is for his own benefit, to avoid overspending. Naruto uses his allotted money to enjoy the various food and games at the festival. Having depleted his allowance buying food for himself and Jiraiya, Naruto sets off to find his sensei. Naruto finds Jiraiya in a room with two women drinking sake, infuriated that Jiraiya has spent all of his savings. As he lashes out at Jiraiya, two men enter the room, and Naruto accidentally throws the squid he was holding at the stranger's coat, creating a stain. As the two men begin to cause trouble, Jiraiya advises Naruto to pay attention. Forming a blue sphere of chakra in his hand, Jiraiya hits the man in the stomach and sends him flying away with incredible force. The man then recognises Jiraiya, and in fear, hands him his wallet. Jiraiya uses some of the money to pay for the stand he accidentally destroyed, and uses the rest to buy balloons and water balloons.
Ready to begin their training, Jiraiya gives Naruto a balloon. Jiraiya explains that Naruto must combine his Tree Climbing Practice as well as his Water Surface Walking Practice in order to spin the water inside the balloon. Naruto proudly states that he understands, and thus begins his training.