Naruto Raijū: The Beginning (落雷を用いる空から降りるハリケーンの獣: 初め, Maelstrom Raijū: The Beginning) also known as Part IV takes place five years after the adventures of Naruto Uzumaki.
The world is on the brink of Fifth Great Shinobi War. Konoha, Yamagakure, and Sunagakure are feuding with Kirigakure, Iwagakure and Kumogakure due to a disagreement on a new development: the Land of Mountains, where Yamagakure originates, has become the Sixth Great Nation and on top of that, it has come into possession of an artificially made Ten-Tailed Demon Fox. After many years of peace, the bloody Mist Village has returned under it's Seventh Mizukage. The nations struggle to gather armies and each nation attempts to manufacture Jinchuriki out of the Tailed Beasts that were set free when Naruto destroyed Akatsuki twenty years prior. Out of the rubble comes the series two protagonists Ryun Mazuka; a member of the famous Mazuka Clan in Yamagakure. He dreams of protecting his loved ones is the force that unknowingly thrusts him onto the world stage, not to mention his discovery that he himself is the current host of the Four-Tailed Giant Monkey, and Riyan Uchiha; a young man looking for revenge from events that brought about the end of the Third Great Shinobi War as well as the new Jinchuriki of the Eight Tailed Giant Ox. With Akatsuki rising again, and the mysterious Hanmadang also about their own affairs, how will Ryun and Riyan solve the problem, that it seems not even Naruto could.
See also: List of Part IV Episodes & Specials
Ryun's Story arcs
- Hunting for Answers arc
- Serpent Mode Training arc
- Four and Ten-Tails arc
Riyan's Story arcs
- Kitsunekamen & Kurisu arc
- Hunt for Tatsu arc
- Tsukiakari arc
Both Riyan and Ryun's story arcs
- Hunting the Uchiha Survivor arc