Naruto might also face emotional burnout. If he's constantly pushing himself in his relationships, he could end up feeling drained. For example, if he's always trying to be there for everyone but not getting the same support back, he could become depressed or angry. This can then affect his performance as a ninja and his relationships further.
There could also be emotional consequences. If he pushes himself too far in the heat of battle or in pursuit of a goal, he might alienate his friends and allies. They may be worried about his well - being and feel that he's being reckless. This could lead to strained relationships until he learns to find a balance between pushing his limits and taking care of himself.
His friends would be filled with guilt and grief. Characters like Sasuke, Sakura, and Kakashi would blame themselves for not being able to prevent his death. Their relationships would be severely strained, and they might go through major character changes as a result. For instance, Sasuke might become even more withdrawn and vengeful, blaming the world for Naruto's death.
He might become withdrawn. Instead of being the energetic and outgoing Naruto we know, he could isolate himself from his friends and the village. This would change the whole dynamic of the relationships in the fanfic.
Well, the Kyuubi itself would probably be changed. Naruto had a deep bond with it. His sacrifice might make the Kyuubi more empathetic towards humans. It could even decide to protect the village in Naruto's memory. On the other hand, the next generation of ninja would grow up without Naruto as their inspiration. They would have to find new heroes to look up to, and the stories of Naruto's deeds would become more like legends, with a bittersweet feeling of what could have been if he had lived.
One possible consequence could be that Konoha would enter a period of deep mourning. Naruto is a beloved figure, and his sacrifice would leave a huge void. The villagers might be inspired by his selfless act to strive for a more peaceful and united Konoha. His friends, like Sasuke, might be filled with a new sense of purpose, perhaps to carry on Naruto's ideals in a more aggressive way to ensure his sacrifice wasn't in vain.
There could also be a shift in the power balance within the ninja world. Other villages might see Konoha as weakened due to Minato's self - sealing and might take advantage of the situation, leading to more conflicts and power struggles among the villages.
One consequence could be that Naruto has a constant struggle to keep Kaguya's power in check. He might experience internal battles within his mind as Kaguya tries to break free.
He could become withdrawn. Draco might isolate himself from others, not wanting to let anyone see his inner turmoil. This could make him seem even more mysterious in the fanfic.
One possible consequence could be an immediate power boost. Since Dark Naruto represents the repressed and negative aspects of Naruto, absorbing it might give Naruto access to a new level of strength that was previously locked away. This new power could be both physical and mental, allowing him to face stronger opponents.
If he stabs himself in a non - vital area, he might survive but be severely weakened. This could lead to him having to rely on his friends more for protection and support, changing the dynamics of their relationships.