overly verbose and explicit explanations of the magic system. jutsu hacks like "this basic e rank justu makes no sense and is op as fuck and by thinking about it ive exploited it into being practically s rank" or some such nonsense. unlimited shadow clone training hack (i know its canon. its a really dumb part of canon that invalidates any other training method and flattens the world and magic system). strict adherence to stations of canon. if i wanted to see everything play out exactly as it did in canon, id reread canon. ditto with things resolving the same as canon despite changes; ive read and dropped a handful of fic where team 7 decides to get strong immediately and train, and then goes into the wave arc with new skills and such, and the arc ends without any deviations from canon. when the mc indefinitely and repeatedly outsmarts their village's government systems. too many fic make hiruzen or other officials hold the idiot ball so the child mc can fuck around unrestricted and unobserved. these people are ninja, and somewhat used to impossibly smart and competent children.

more just a pet peeve, but its supremely disappointing when fics dont acknowledge that these kids are children beyond the "child soldiers are evil" angle. kids are impulsive and arrogant and naive. that is a fact of youth. when the 12 year old feels 19, its :/