Naruto Volume 23

Episodes 89 - 92. Jiraiya and Naruto finally track down Tsunade in a seedy gambling hall, and Naruto can't believe the offer Jiraiya makes her. But someone else has found Tsunade as well, with a sinister proposal of his own--Orochimaru! While Tsunade weighs her options, Naruto wears himself out working on the final stage of the Fourth Hokage's powerful jutsu. He's made a bet with Tsunade that he'll master the Rasengan, and he's only got a week to do it!