One way could be through a powerful curse. Maybe a dark ninja places a curse on Naruto that slowly corrupts his mind. Another way might be extreme betrayal. If the village he loves turns on him for no good reason, he could snap and turn evil.
Naruto's understanding of different forms of power would expand. The Kamehameha is based on ki energy, which is different from chakra. This would make him more open - minded about other types of energy and power sources. He might start to explore if there are ways to combine chakra and ki, which could lead to him developing entirely new jutsus. This exploration could also make him more respected among the ninja community as a pioneer of new power - combining techniques.
Naruto could become more confident. Since Horus is a powerful and respected figure in Egyptian mythology, being his son would give Naruto a sense of self - worth. He might start to act more like a leader, inspiring others with his new - found identity. His fighting style could also change. Instead of relying solely on his regular ninja techniques, he would incorporate his Horus - given powers, like enhanced speed or the ability to see far distances.
To develop Hinata's character in a Naruto Hinata Evil Avatar fanfiction, we could explore her backstory more deeply. There could be some hidden trauma or family secrets that the evil avatar state brings to the surface. As she delves deeper into her new evil self, these past issues could resurface and cause her to re - evaluate her actions. She could also have interactions with Naruto that are different from their usual dynamic. For instance, Naruto might try to appeal to her old self, and Hinata could respond in unexpected ways, which would all contribute to her character development.
She could gain new powers or abilities. In the Naruto universe, there are many different forms of power. Maybe she could learn some basic ninjutsu or even develop a new form of her Maiden powers by combining it with chakra. This would not only change her combat capabilities but also her character as she becomes more powerful and has to handle this newfound strength in a different way compared to RWBY.
Naruto's character could develop in terms of his leadership skills. In the DxD universe, there are complex power structures and political situations. By being involved in the events there, Naruto could learn different leadership styles and apply them to his own way of leading. He could also develop his understanding of friendship and loyalty in a new context. For example, when facing enemies with the Rider or Caster, he might have to make tough decisions about who to trust and how far he's willing to go to protect his new allies, which would all contribute to his character growth.
The laughing octopus could be developed by giving it a unique backstory. For example, it could have been experimented on by Orochimaru, which led to its strange laughing behavior. This would also tie it into the existing Naruto universe. It could also have special abilities like shooting ink that has various effects, and its laughter could be a sign of it using its powers.
The son could be developed as a very determined character. Since he grows up with a banished father, he might have a strong desire to change the situation. He could be skilled in both physical and mental aspects, like being an excellent fighter and also having great strategic thinking, just like Naruto.
The half - brother could be developed as a character with a troubled past. He might have been ostracized in his own community because of his relation to Naruto or his own unique abilities. This could make him initially cold and distant but as he interacts with Naruto, he could gradually open up and become more warm - hearted.
Often, in fanfiction, Naruto's psychological development is shown through his interactions. His conversations with Iruka Sensei can be a starting point. Iruka's belief in him helps Naruto start to believe in himself more, which is a big step in his psychological growth.
The relationship could start with Ino being curious about Naruto's sudden change to evil. She might try to reach out to him, thinking she can change him back. This initial interaction can set the stage for a complex relationship.