The episodes for the twentieth season of the anime series Naruto: Shippuden are based on Part II for Masashi Kishimoto 's manga series. There is also a side story revolving around Itachi Uchiha 's life in the Leaf Village and his early days in the Akatsuki. The season aired from May to October The season contains nine musical themes, including three openings and six endings. From Wikipedia, the free encyclopedia. Naruto: Shippuden season 20 Country of origin Japan No. Anime and Manga portal.