Naruto universe refers to the fictional world where the Naruto series takes place. Created by Masashi Kishimoto, it's a world steeped in Japanese history, mythology, and infused with exciting elements of fantasy and adventure.
Basically, it's a universe inhabited by shinobi, or ninja, who live in hidden villages scattered across the land. Ninjas have the ability to use chakra, the energy force within them, to perform supernatural feats known as jutsu. The focus is on Team 7, consisting of the titular character Naruto Uzumaki, the talented but aloof Sasuke Uchiha, and the intelligent and driven Sakura Haruno, led by their expert sensei Kakashi Hatake.
The Naruto universe is as much about friendship, loyalty and the tenacity of the human spirit as it is about exciting battles and supernatural powers. Throughout the story, he questions the ideas of fate, revenge, hatred and conveys a message of hard work, love and peace.