OH?! Please, Mister Postman

Naruto accidentally meets up with Jiraiya while in another area, and demands that he trains him. Jiraiya refuses though, as he has to finish the script for his next volume of his series. Anxiously wanting to train, Naruto writes it for him and mails it off. Knowing his reputation is at stake, Jiraiya makes Naruto accompany him on a mission to get it back. However, the Courier Ninja, a type of ninja postman, won’t let their missions be stopped so easily. Even worse, turns out Naruto mixed up his delivery with an important message to the Fang Country, and if they don’t fix this mess, war will break out!

Anime Series: Naruto