Ripping off Naruto exactly down to every fine detail isn't something most people are likely to do. I'm just pointing out that there are some blaring similarities between the two, at first when I started reading the manga I thought /a/ was just pulling my leg with the comparison, but it fits as a rather similar in many ways.
Shinigami School/Ninja School.
Angsty corruption plot (done better so far in my opinion)
Obnoxious attention whore ninja coupled with a quiet girl who is the only one who really understands why he shines.
It's not exactly the same and differs in many ways. It's also similar to other shonen in humour and style, seems like they went for what worked and mixed it up. I like it half the time, it's nothing special but better then shit we've had in this season.