Naruto's life in the fanfic could be filled with a sense of longing for his mother. This might affect his emotional state and how he approaches his training and relationships. He could be more determined to become strong in order to find out why his mother left him. On the other hand, he may also face some bullying or isolation in Konoha without the immediate protection of his mother, which would further shape his character as he tries to overcome these difficulties.
He may face some difficulties in understanding his identity. Since Kushina is not there to tell him about his family background, he might have to discover it on his own, which could lead to some misunderstandings and challenges. Also, his relationships with other characters in Konoha could be different. For example, he might seek more father - like figures among the villagers, which could change the dynamics of his interactions with them.
Naruto would probably feel abandoned at first. He might become more withdrawn and have trust issues. But as time goes on, he could grow stronger out of a need to prove himself. He may also form closer bonds with his friends in Konoha, like Sasuke and Sakura, as they become his new family in a way.
One possible reason could be for Naruto's safety. Maybe she has to go on a dangerous mission and believes Konoha is the safest place for him. Another reason might be that she is forced by some powerful enemies who threaten Naruto's life if she doesn't leave him in Konoha.
The relationship between Konoha and the Uzumaki clan might be further strained. With Kushina leaving, Konoha would lose an important link to the Uzumaki. And other Uzumaki members might see this as a sign that Konoha is not a safe place for them.
One possible reason could be to protect Naruto from the hidden threats in Konoha. Maybe she discovers some dark secrets or plots within the village that she believes will endanger Naruto, so she decides to take him away.
One possible reason could be for his safety. Konoha is a well - protected village with many skilled ninja. She might believe that leaving him there would ensure he has the best chance at survival and growth as a ninja. Also, she may have some mission or obligation that forces her to leave him behind, perhaps something related to the greater good of the village or the ninja world in general.
It can also make him look more complex. In the original story, Naruto is all about protecting Konoha. But in this fanfic, his decision not to help challenges that simple view. He could be seen as a character who weighs the pros and cons and makes a tough choice, like if he decides Konoha has done too much wrong in the past to deserve his help.
His relationships would become very complex. His friends in Konoha would be in shock. Naruto leaving Konoha for Kumo is like a slap in the face to them. They would wonder what drove him to such a decision. For example, Naruto had such a strong bond with Iruka - his first mentor. Iruka would be deeply saddened and would question if he had failed Naruto in some way. And Naruto's relationship with Kakashi would also take a hit. Kakashi would be worried about what this means for the future and how it could potentially lead to conflict between Konoha and Kumo.
His relationships with his friends like Sasuke and Kakashi would also be affected. Sasuke might understand Naruto's decision on some level, having also left the village before. Kakashi, on the other hand, would be worried about Naruto. He might try to find him and bring him back. This could create some tension between Naruto and Kakashi as Naruto tries to assert his independence.
In the long run, the relationship could be mended if Naruto is able to show that his move to Suna has been beneficial not only to him but also to both villages. His friends might start to see his actions in a new light. They could collaborate on certain projects or missions that involve both Konoha and Suna. However, there would always be a sense of loss and change in their relationship. Naruto's departure would be a significant turning point, and they would have to re - evaluate their friendship in the context of the new situation where Naruto is now part of Suna.
The story would deviate from the original themes of unity and friendship. Naruto's hatred could split Konoha into factions. This would mean different training regimens, different missions, and different loyalties. For example, Naruto might start his own group of ninjas who share his views, which would completely change the power dynamics in the village.