I'm not sure specifically as there could be many different plots in such a fanfiction. It might involve Naruto having some god - like powers but being rejected or abandoned by his mother Kushina for various reasons, perhaps due to fear of his power or some dark influence.
The main characters are Naruto, who is in a rather tragic situation with his godlike abilities yet being abandoned. And Kushina, whose actions of abandonment drive the story forward. There might also be other characters like Naruto's friends or other ninja from the village who could play roles in how Naruto copes with the abandonment and his journey with his powers.
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.
Fanfiction about Naruto being abandoned by Minato and Kushina can also be a way to explore different power - up scenarios. Since he doesn't have the emotional support from his parents, he might be forced to seek power in other ways, which could lead to a Naruto with a very different set of skills and abilities compared to the original series.
Maybe an ancient evil that has been awakened. This entity is so powerful that it takes the combined godlike powers of Naruto and Kushina to stand against it. The antagonist could have some connection to the origin of chakra or an old, forgotten curse.
One possible reason could be some sort of dark force influencing Kushina's mind. Maybe she was under a powerful genjutsu that made her think she had to abandon Naruto for his own safety, even though it was a false perception.
Well, in such a fanfiction, Naruto might initially be filled with anger and confusion. He may have a harder time connecting with his peers in the village. As he gets older, he could start to piece together the events that led to Kushina's abandonment. Maybe there was some dark force or misunderstanding that caused it. This could lead to a whole series of adventures where he tries to set things right or find a new family in the form of his friends and mentors.
The fanfiction would also change the relationship dynamics in the story. For instance, Naruto's relationship with his father Minato would be more complex as he might also feel some resentment towards Minato for not preventing Kushina from leaving. It could also affect how Naruto views family in general, making him more cynical or desperate for family love.
Well, a frequent theme is the exploration of Naruto's new - found godlike abilities in relation to his love for Kushina. It could be that his powers are somehow connected to his feelings for her. Another common aspect is the emotional healing that comes from their relationship. Naruto may have had a tough life, and his connection with Kushina in these fanfictions can be a source of comfort and growth. Additionally, there might be themes of heroism, where Naruto, with his godlike powers, is seen as a hero in Kushina's eyes and vice versa.
There could be a fanfiction where Naruto discovers that Kushina had a secret technique that she never got to fully use. Naruto, being the determined character he is, masters this technique and becomes an even greater hero. This could involve him using the technique to save his friends from a seemingly impossible situation, like a powerful enemy attack on the village.