Tales of a Gutsy Ninja ~Jiraiya Ninja Scroll~ Part 1

is episode 127 of the Naruto: Shippūden anime. It aired at the same time as episode 128. The episodes are based on a number of manga chapters from the entire series.

Synopsis
Back in the times of the Second Hokage, the young Jiraiya, Orochimaru, and Tsunade are assigned to Hiruzen Sarutobi's platoon. Being fascinated by Sarutobi's Summoning Technique, Jiraiya tries it him self, only to teleport himself to Myobokuzan. There, Jiraiya trains under Fukusaku and meets the Great Toad Sage who has a vision of his future. When his training with Fukusaku had been completed, Jiraiya goes on a journey with the goal to fulfill his destiny. Before returning to Konoha, Jiraiya fights an unknown ninja, and manages to leave a scar on his forehead before the end of their battle.