Well, Naruto as a medic nin would likely become more solemn at times. When he's faced with severely injured patients, he can't afford to be his carefree self. His sense of responsibility would skyrocket. He would be constantly worried about making mistakes that could cost someone's life. His determination would take on a new form. Instead of just being about becoming Hokage or getting stronger in battle, it would be about perfecting his medical skills so he can save as many lives as possible. He'd also be more collaborative, working closely with other medic nins and learning from them.
Naruto would probably be more patient. As a medic nin, he has to be careful and precise, which would require him to rein in his impulsive nature. He'd also be more empathetic, understanding the pain of others on a deeper level since he's responsible for healing them.
In this role, Naruto's personality would have some significant changes. He would become more nurturing. His usual boisterousness might be toned down a bit as he focuses on the delicate work of healing. He'd be more self - reflective too. Since he's dealing with life and death situations in the medical field, he'd start to think more about the consequences of his actions. He might also develop a sense of calmness that he didn't have before, as he needs to keep his patients at ease while treating them.
Naruto's personality would likely become more patient. As a medic nin, he would need to be calm and focused during treatments. His impulsiveness would probably decrease as he realizes that any hasty move could harm a patient. He might also become more empathetic, understanding the pain and suffering of others on a deeper level.
If Naruto becomes a hunter nin in the fanfic, his sense of justice could become more complex. As a hunter nin, he'd be exposed to different shades of right and wrong. He might not be as quick to judge someone as he used to be. Instead of simply seeing enemies as bad guys, he'd start to understand the reasons behind their actions. This could make him more empathetic but also more calculating in his approach to dealing with threats. Also, his normally boisterous nature would likely be toned down to avoid attracting unnecessary attention.
Naruto might be more distrustful of the Hidden Leaf Village. Since he's being raised by a missing - nin, he would hear different perspectives that might make him question the village's motives and actions.
The fanfiction could also explore the relationships Fem Naruto builds as a medic nin. She would interact with other medical staff, patients, and even the ninja she heals. This could lead to new friendships, rivalries, or even romances. For instance, she might develop a special bond with a fellow ninja she repeatedly heals, which could turn into a deeper relationship over time.
He might become more patient. As a medic, he has to be careful and take his time with patients, which is different from his impulsive fighting style.
They save important characters. When a main character is severely injured in battle, the combat medic nin steps in to heal them, allowing the story to continue. For example, if Naruto gets badly hurt, the medic nin can revive him.
If Naruto becomes involved with Slenderman in a fanfiction, his usually cheerful and determined personality might become darker. He could be more withdrawn as he grapples with the strange and often terrifying aspects of Slenderman's world.
His personality might become more refined. Instead of being the rowdy Naruto we know, he could be more composed and polite due to the influence of the daimyo's court.
He might become more serene. Since Sadaiam might have a calmer and more nature - centered philosophy, Naruto could adopt some of that. He'd be less impulsive in his actions and more contemplative.
Naruto might become more aggressive at first. The influence of Venom could bring out his darker side. But as he gets used to it, he would learn to balance it with his usual positive and determined self.