Jiraiya features exclusively in a flashback occurring roughly twenty years prior to the film's main timeline. During this brief sequence at Konohagakure, he interacts with his student Minato Namikaze, showcasing the perfected Rasengan technique. The moment precedes Minato's mission to Rōran and anchors itself as a historical marker within the film's time-travel framework. Solely through this flashback, Jiraiya establishes his mentorship with Minato and his role in developing the Rasengan, without extending into other narrative elements or *The Lost Tower*-specific lore.