Rokujou Miharu is a boy who has a hijutsu (hidden technique) living inside of him. This hijutsu is the power of creation. Many ninja clans are seeking it as the one who possesses it becomes the ruler of the ninja world. Rokujou's classmate Kouichi started a nindou ("Way of the Ninja") club at school with Kumohira, his English teacher. Both Kouichi and Kumohira are secretly ninjas. They tried to persuade Rokujou to join the ninjutsu club. At first, he was reluctant, but after being attacked by group of ninjas trying to get his hijutsu, he joins. He must become the Ruler of Nabari in order to survive.
Yes it's a copy from naruto and also Every annoying anime with some similarities like they hv their won world of Ninja, Second one of the characters hate her brother because he killed his own parents with the clan and then turns out that he was the good person Like Naruto's boyfriend Sasuke with his Legend brother Itachi.
And the more u watch the more u hate it and always say this word ( Nabari world ) mean the ninja's world to them but they use it so often that each character HV HV to say it which is every annoying, Man I hate this Dialogue. When they explain something they hv to say in Nabari world OK!!!! we got it in the first thousand times u r from a undercover society DO NOT F Repeat it like some annoying person who didnt believe thatgraduate from high school before 5 sec.
The idea is repeat it but they could make it better anime if they but more effort in manga and anime.