Naruto's character would likely develop in several ways. Firstly, with the Rumble Rumble fruit power, he could become more independent in combat as he has a unique ability that others don't. This might make him a bit more headstrong at times. However, he would also learn the importance of balance, not relying solely on the fruit's power but also on his ninja training. His sense of justice would probably remain the same, but he could be more efficient in achieving it. For instance, he could use the electricity to quickly disable enemies without causing too much harm, which aligns with his kind - hearted nature. Overall, his character would evolve to adapt to the new power while still holding onto his core values.
In a fanfic scenario where Naruto consumes the Rumble Rumble fruit, it would be a huge game - changer for him. His chakra nature could potentially be affected, and he might be able to generate electricity from his own chakra. This new power could help him in battles against stronger opponents. He could send out electric waves to disrupt enemy attacks or even paralyze them. Moreover, it could also change his relationships with other characters as they would have to adapt to his new - found abilities.
The Rumble Rumble Fruit would give its user a significant advantage in combat. They could create powerful lightning - based attacks that could easily take out groups of weaker opponents. This would change the power dynamics as the user would become a force to be reckoned with. For example, if a mid - level ninja got the fruit, they could suddenly be on par with some of the stronger Jonin just because of the sheer power of the fruit's abilities.
One possible plot could be that a new character arrives in the Naruto world with the Rumble Rumble Fruit ability. This character could initially be seen as a threat by the Hidden Villages. However, as the story progresses, they team up with Naruto and his friends to fight a common enemy, like a powerful group of rogue ninjas. They use the unique powers of the Rumble Rumble Fruit, which can create and control lightning - like rumbles, to gain an edge in battles.
Naruto's character would become more versatile. With the Gum - Gum Fruit powers, he'd be less reliant on just his chakra - based techniques. This could make him more confident in different situations. He might start to see battles from a different perspective, one that combines his ninja skills with his new stretchy powers. His carefree nature could be enhanced as he has fun exploring his new abilities.
Naruto's character would likely become more complex. With the new powers from the devil fruit, he might face new moral dilemmas. For example, he would need to control the power so as not to harm his friends accidentally. His confidence might grow even more, but he could also become a bit overconfident at times. He would still have his core values of friendship and protecting the village, but the way he achieves those goals would change with his new powers.
If Naruto ate the Ope Ope Fruit in fanfiction, his character development would likely involve him becoming more strategic. The unique abilities of the fruit would force him to think differently in battles. He would no longer rely solely on his traditional ninja skills but would have to incorporate the fruit's powers. This might also make him more respected among his peers as they see him mastering a completely different form of power. He could also use the fruit's healing aspects to become more of a protector in a different sense, not just fighting but also mending the wounds of his comrades more effectively.
His character would become more complex. With new powers from the devil fruit, he'd have to learn control. He might start to question his identity as a demigod since these are such different powers. Maybe he'd become more confident or more cautious depending on the nature of the fruit.
Luffy's character would develop in several ways. With the Flame - Flame Fruit, he'd have to learn to control the fire element. This would require discipline, which is something he doesn't have much of in the beginning. As he masters the power, he'd grow more responsible. Also, his reputation among other pirates and in the world would change. He'd be seen as an even more dangerous and unpredictable foe, which would add to his allure as a pirate captain.
If Naruto gets a devil fruit in fanfiction, his character development would be quite interesting. He has always been known for his hard work and determination in mastering chakra - based techniques. Now, with a devil fruit power, he would have to start from scratch in a way. He'd need to train to fully utilize the devil fruit abilities. This process of learning something completely new would likely make him more humble as he realizes there's always more to learn. It could also make him more creative in combat, as he combines his old skills with the new devil fruit powers.
His character would become more complex. He'd have to learn to balance his original ninja skills with the new ice powers. This could make him more cautious as he figures out how to use the power without freezing his allies.