A plot for this type of fanfic could revolve around Naruto's inner turmoil. He could be constantly haunted by the question of why his parents neglected him. This could lead him to make some bad decisions, like getting involved with the wrong people. However, through a series of events, he starts to realize that he can create his own family and support system. He then begins to build a new life for himself, one that is not defined by his parents' neglect but by his own strength and the relationships he chooses to cultivate.
Well, in such a fanfic, Naruto's character would change a great deal. He might become more self - reliant at a very early age. Since he doesn't have parental figures to rely on, he'd have to figure things out on his own. This could make him tougher, but also more bitter. He may not have that same optimistic outlook that he has in the original story because the neglect could have made him cynical about the world and people around him.
One possible reason could be that they are too involved in their own shinobi duties. The world of ninjas is full of dangerous missions, and they might be constantly away on important tasks, leaving Naruto feeling neglected.
His relationships with his peers can become more intense. For example, with Iruka - sensei, Naruto might cling to him more as a father figure. With his teammates, he may be overly eager to prove himself worthy of their friendship. He could be more sensitive to any signs of rejection from them.
One possible story could be that Naruto discovers his unique bloodline abilities later in life and realizes that his parents' neglect was partly due to fearing his power. He then has to come to terms with this and learn to control his abilities on his own.
Naruto might try to seek attention elsewhere. He could focus on his training more intently. By pouring his energy into becoming stronger, he distracts himself from the pain of parental neglect. Also, his friends could play a crucial role. Their friendship might give him the sense of family and belonging that he lacks at home.
One common theme is Naruto's struggle with self - worth. Since his parents are neglectful in the fic, he may constantly question his value. Another theme could be his search for love and acceptance outside of his family. He might find solace in his friendships, like with Sasuke and Sakura, who could become more important to him as a support system.
In fanfiction, Naruto having the Rinnegan and being neglected by parents can lead to some really interesting character development. It could make him more self - reliant and distrustful at first. He might have to learn to harness the power of the Rinnegan on his own, without any parental guidance. This could result in him making some mistakes along the way but also growing stronger in unique ways.
In this type of fanfiction, Naruto could have a different attitude towards authority. As his parents are neglecting him, he might not have that natural respect for figures of power. He may question the village's system more. Also, his dreams of becoming Hokage could take on a new meaning. Instead of just seeking recognition, it could be a way for him to create a family - a village where no one is neglected like he was by his parents.
Dark Naruto may seek solace in nature. He could go to remote places in the forest and find peace there. Over time, he might start to understand that his parents' neglect doesn't define him. He could then use his experiences to help other neglected or outcast individuals, turning his pain into a positive force for change.