You could have Zuko be constantly outsmarted by his enemies in really dumb ways. Also, you could make his backstory completely different in a bad way, like making his mother leave him because she didn't love him. And then, you could make him lose his temper at every little thing, which is not in line with his growth as a character in the original story. This would really get on the nerves of Zuko fans who love his character development.
One way could be to make Zuko constantly lose his battles in a really uncharacteristic and stupid way. Another way might be to give him a really cheesy and out - of - character love interest. And a third way could be to have his father be nice to him all of a sudden for no good reason.
One way could be constantly misinterpreting Iroh's character. For example, making him overly cruel when he is known for his kindness. Another way might be writing out - of - character relationships for him, like having him suddenly be at odds with characters he was always friendly with in the original. And also, completely ignoring his backstory and the development he went through in the series can piss off fans of Iroh fanfiction.
One way could be constantly misinterpreting Zuko's character. For example, making him out to be a coward when he's clearly brave. Another way might be pairing him with a completely inappropriate character that goes against his known values. And also, writing fanfiction where he fails at every single task he attempts without any logical reason.
Well, in certain fanfiction plots, it could be due to interference in his personal life. For instance, if the Ministry of Magic starts to impose strict rules on his after - school activities, which he views as an infringement on his freedom. Or perhaps if a new teacher at Hogwarts has a vendetta against him and is constantly giving him a hard time, that would surely make Harry pissed off.
Well, one key element could be the strong and unique nature of the Uzumaki clan. They are known for their vitality and powerful chakra. In this fanfiction, it might focus on how Naruto, being an Uzumaki himself, has certain traits that make him formidable. Another element could be the situations or characters that might potentially 'piss off' an Uzumaki, like enemies underestimating their power or messing with their loved ones.
Since I'm not familiar with the exact word 'antervasana' in Hindi, it could be a new or archaic term. It could also be a misspelling or a very local term. One way to find out its meaning could be to consult a native Hindi speaker who is well - versed in local culture, traditions and language nuances.