Season availability varies significantly by region. In some countries, it may only show the first few arcs or up to 21 seasons.
If you are watching Naruto Shippuden on Netflix in many regions (such as the United States), the seasons are numbered differently. Netflix groups episodes differently than the original Japanese broadcast. how many seasons are there in naruto shippuden
Naruto Shippuden is famous for having a large amount of "filler" content—episodes created for the anime to give the manga time to get ahead of the show. Season availability varies significantly by region