One possible plot could be Naruto growing up with a sense of abandonment that deeply affects his relationships. He might struggle to trust others and constantly seek validation. Another plot could involve Naruto's journey to discover the truth about his mother's abandonment and how it changes his view of himself and his family.
Naruto may become more reserved. The abandonment by his mother could make him less likely to open up to others easily. He might be more cautious in forming relationships.
In such a fanfic, perhaps the plot could involve Naruto growing up with a deep sense of abandonment. He might constantly struggle with self - worth issues. For example, he could be more withdrawn than in the original story, always wondering what was wrong with him that made his mother leave. He might also have a harder time trusting others, fearing that they too will abandon him at some point.
Naruto's character would likely become more self - reliant. Without a mother figure, he'd have to learn to take care of himself from a young age. This could make him more independent in his decision - making and less likely to rely on others for emotional support.
Perhaps it could be a new character created specifically for the fanfiction. A young ninja from a minor clan who showed extraordinary talent in a unique form of jutsu. But because their clan was small and not very influential, and the larger clans felt threatened by this new talent, they managed to get the village to abandon this prodigy.
Another reason might be that they faced some sort of writer's block. Coming up with new plot ideas, especially for a crossover as complex as Naruto and Devil May Cry, can be really challenging. They might have hit a point where they didn't know how to progress the story further. Or perhaps they received some negative feedback early on that discouraged them from continuing.
In some fanfictions, Naruto's mother might be a character related to the Uchiha clan in a unique way. It could be someone who was secretly in love with an Uchiha and had Naruto as a result. Maybe she was a long - lost relative of the Uchiha who was trying to protect the clan's secrets through Naruto.
I'm not sure specifically as it depends on the author's creation. But it might involve Naruto having some sort of conflict with Kumo and then abandoning it. Maybe there are issues like political differences, or problems with the shinobi from Kumo that lead Naruto to this decision.
In this type of fanfiction, the story could also focus on how the village might react differently to Naruto. Without Kushina's presence, which could potentially have been a positive influence, Naruto might face more hostility. His struggle to fit in and gain acceptance could be more arduous, and this could be what drives him to the brink of insanity. Maybe he would develop a more jaded view of the world and the people in it.
Often, 'abandoned naruto pirate fanfiction' may show signs of a lack of consistency. The author may have started with a certain vision but as they abandoned it, the flow and coherence of the story can be disrupted. Also, there might be unresolved conflicts that were left hanging because the writing was discontinued.