Naruto might gain the power of duality. He could split himself into two different states, like a physical state and a spiritual state. This would allow him to be in two places at once, or to attack an enemy from two different aspects simultaneously. It would be a very unique and powerful ability in the Naruto world where most ninjas have more straightforward powers.
One potential power could be the power of uncertainty. His actions and abilities would be clouded in mystery. Enemies wouldn't be able to tell if he was truly strong or weak at any given moment. He could use this to his advantage in battle, for instance, by making his opponents hesitant to attack because they're not sure if he has a hidden, powerful move or if he's actually vulnerable.
Well, it's a very strange concept. One possibility could be that Naruto gains some sort of quantum - like abilities. Maybe he could exist in multiple states at once, like being both here and there in the ninja world, which would give him an edge in battles as his opponents wouldn't be able to predict his exact location.
The child could have a power related to the Hozuki clan's ability to turn into water. But with Naruto's genes, this transformation could be enhanced. For instance, they could transform into a larger body of water or be able to hold their water form for a longer time. And perhaps they could use the Nine - Tails' chakra to add a fiery element to their water jutsu, creating steam - based attacks.
In such a fanfic, Harry might have the power to exist in multiple states at once. He could be in Hogwarts and also on a mission in the Muggle world simultaneously. His identity as the 'Chosen One' could be both certain and uncertain. He could have the ability to make decisions that lead to two different outcomes existing at the same time until a certain event 'collapses' the possibilities. Like he could both save and lose a friend until a crucial moment in the story.
Well, in the fanfiction, it's possible that one of the sisters has a power related to the wind, just like Naruto. But instead of using it for offensive attacks mainly, she uses it for more defensive and utility purposes, like creating wind barriers or using the wind to carry messages. Another sister could possess a fire - based power. She could be a master of fire jutsu, creating intense flames that can melt metals. The third sister might have a unique power of light, being able to blind enemies or use light to create illusions.
The baby might have some of Naruto's chakra - related powers. Since Naruto has the Nine - Tailed Fox's chakra, the baby could inherit a portion of that incredible power source. Also, Kurenai is skilled in genjutsu, so the baby could have a natural aptitude for that as well.
One way is through his magic. His spells could be in a state of superposition. So a spell like 'Expelliarmus' could be both cast successfully and not cast at all until some 'measurement' in the story. For example, if he casts it at an enemy, the enemy's reaction could be both disarmed and still armed until the moment of impact, which is like the 'observation' in Schrödinger's experiment.
In the fanfic, Naruto could receive Orochimaru's unique form of chakra manipulation. This would allow him to do things like transform his body parts into snake - like appendages for better attack and defense. And perhaps he gets the power to resist certain types of genjutsu more effectively, as Orochimaru has developed ways to counter illusions. There's also a possibility that he gets a power boost to his physical strength and speed, similar to how Orochimaru has enhanced his own body over the years.
Physically, he might gain new powers or abilities as mentioned before. But there could also be negative effects. His body could reject the foreign blood, leading to internal pain and weakness.
In this fanfiction, Naruto could possess the power of regeneration. Dragons are often depicted as having strong regenerative abilities. So, if Naruto gets injured in battle, he might be able to heal himself much faster than before. Additionally, he could have the ability to sense things from a great distance, like a dragon can detect prey or danger from afar. His senses of sight, smell, and hearing could be greatly enhanced, allowing him to be more aware of his surroundings and better anticipate attacks.
A fanfic set in a social gathering within the 'Naruto' world could include these elements. For example, if there's a festival in Konoha and the characters are enjoying some special drinks, burping might be a natural part of it. It could also be in a story where the characters are on a journey and stop at an inn to have a drink and unwind.