He might become more withdrawn. Instead of being the energetic and enthusiastic Naruto we know, he could start to isolate himself from others.
Naruto's caring changes their relationship in a positive way. At first, the Kyuubi saw Naruto as just a vessel. But as Naruto shows care, the Kyuubi starts to see him as an equal. For instance, it might start to communicate more openly with Naruto, sharing its knowledge of the ninja world.
His character development takes a negative turn. Instead of being the optimistic and determined Naruto we know, he becomes apathetic. His once - strong sense of justice fades away.
One possible reason could be that Naruto has faced too many betrayals. Maybe his friends turned on him in the fanfic, which made him lose faith and stop caring.
One possible reason could be that Naruto realizes Sakura's unrequited love for Sasuke. He might feel tired of always being in a one - sided emotional situation with her. Another reason could be that Naruto has his own goals and growth to focus on. His journey to become Hokage and protect the village requires all his attention, leaving little room for his previous feelings for Sakura.
Well, it makes the triangle less of a love triangle. With Naruto out of the picture in terms of caring for Sakura, it becomes more about Sakura and Sasuke's relationship without Naruto's interference. Sasuke may not have to deal with Naruto's rivalry in terms of Sakura's affection anymore.
One possible reason could be that Naruto has finally realized that Sakura's heart has always been with Sasuke. After years of chasing after her and getting constantly rejected or overlooked, he just gets tired and decides to move on. He might start to focus more on his own personal growth and the other relationships in his life that are more reciprocal.
Perhaps the story then delves into Naruto exploring new love interests. He may meet a girl who shares his values and dreams more closely. Meanwhile, Sakura might start to realize what she has lost in Naruto. This could lead to some tension or even a new dynamic between them where Sakura tries to win back Naruto's attention but he is no longer interested.
Naruto as a god in the fanfic could be more confident and less impulsive. His new powers and status may give him a sense of calm and wisdom that was lacking in his younger self. He may make decisions more rationally, thinking about the long - term consequences for the entire world rather than just his immediate surroundings.
His view of the world would expand greatly. If Naruto is a Xenophage in this fanfic, he would be exposed to different types of entities and powers that are not native to his world. This would make him more open - minded and curious. He would start to question the nature of his own world and the existence of other dimensions. His character would develop from a simple - minded, if brave, ninja to a more complex and philosophical figure, constantly seeking to understand the greater mysteries of the universe while still maintaining his core values of protecting his friends and village.
One possible reason could be that Naruto has faced so many betrayals and hardships in the fanfiction. For example, if his friends turned on him for some contrived reasons, it might lead him to stop caring. Another reason could be the constant failure in achieving his goals, like protecting the village but always being undermined by political intrigue within the fan - made story.