ok...Your request wasn't all that clear...

Anyhow, Naruto has the upper hand to my judgement. True enough, Naruto is hugely overrated and all that. However, in term of overall originality, plotline, characters and overall quality, Naruto is superior than 666satan. I will not go into details as to why. Since this is basically an opinion question. I have read both, and I still found Naruto to be more interesting than 666satan overall. 666satan gets more and more intriguing as the story progresses while Naruto degrades somewhat. However old legends die slow, Naruto is regardless a superior series.

And yes. To those who are visiting this thread and have no idea what we are talking about here. The author of 666satan is the blood sibling of Naruto's author. Hence: "clash of brothers".