It's nice; I was a little appalled when the MC killed Renxue, Donger, and everyone else since he had no reason to, but in hindsight, it's understandable and even a little admirable since he stood by his morals.
Typical low-quality trash novel; MC wouldn't even achieve Genin if he didn't have his system. Dog author relies on the system as a clutch to compensate for low-quality writing.
It's so extra; I understand beefing with the Hokage and Danzo because, well, they aren't exactly good people, even in Naruto's terms, but why would he cut off the Hokage's son's arm? It's so unnecessary. The dude just wanted to spar, and you took it to the extreme because he said your sword style was trash??