The Great Aristocrat was not a manga. The Great Aristocrat was a fantasy novel with a historical background. It told the story of a group of young people with mysterious powers fighting for power and wealth. Although there were some romantic elements in the story, it was not a typical fantasy manga.
In terms of the story's plot, it could lead to Naruto trying to redeem himself in Hinata's eyes. This could involve him going on dangerous quests or changing his ways. It also might make Naruto more isolated as he loses one of the people who used to care about him, which could in turn lead to a change in his relationships with other characters like Sasuke or Sakura.
He might try to prove himself. Naruto has always been a determined character. So he would likely strive to show his family that they are wrong about him. He could do this by achieving great things in the ninja world, like mastering new jutsus or completing difficult missions.
Well, it could be exploring themes like forbidden love and survival in a hellish world. The plot might have them encountering various demons or obstacles while trying to build a connection. Maybe there's also a search for a way out of hell.
One reason could be his power. His connection to the Nine - Tails makes him extremely powerful. In fanfiction, some in Konoha might fear this power and thus hate him. Another reason could be jealousy. Naruto becomes very popular and respected in the original story. But in fanfiction, some characters might be jealous of his achievements and turn that into hatred.
One possible reason could be a false accusation. Maybe someone spread a rumor that Naruto was involved in a heinous act, and without proper investigation, everyone turned against him.
One reason could be the author's intention to explore a different narrative. Maybe they want to show how Naruto would struggle without his usual powers or support system. For example, if he lost his chakra control, it would make him seem weak.
The end might be hated because it didn't tie up all the loose ends properly. In 'Fairy Tail', there were many sub - plots and relationships. If the fanfiction end fails to address these in a satisfactory manner, like leaving a potential romantic relationship in an ambiguous state or not fully explaining a character's growth, fans would be disappointed.
Some fanfictions show Avengers fans booing Tony at public events. They might write mean comments about him on social media within the story, like calling him a 'rich brat' or a 'dangerous inventor'.
He could start by having an honest conversation with his friends. Explain his side of the story clearly. For example, if it was a misunderstanding, he can show evidence to clear his name.