Episode 100 is part of the (Episodes 89–112).
You enjoy character development between Naruto and secondary characters, or if you want to see more of the Tailed Beasts (Isobu). Watch Naruto Shippuden 100
You are strictly following the manga storyline. This arc is largely "filler," meaning it was created by the anime studio to allow the manga to get further ahead. Quick Links & Resources Official Site: Viz Media - Naruto Community: r/Naruto on Reddit Database: Naruto Fandom Wiki - Episode 100 Episode 100 is part of the (Episodes 89–112)