One possible fanfiction could involve Goku Black's unique powers in the Naruto universe. Maybe he could be a powerful antagonist, using his ki-based attacks against the ninja. Naruto, with his never - give - up attitude, would likely try to find a way to defeat him through his own jutsu and the power of friendship.
The Kumo ninja would likely be angry at first. They'd feel that Naruto, as a symbol of hope in the shinobi world, should have noticed their problems. But some of them might also be hopeful that Naruto's arrival would finally change things for the better. As for Naruto himself, he'd probably be shocked to realize how much he'd overlooked Kumo and would feel a sense of guilt.
Kurama might become angry at first. He's a powerful being and being neglected would likely wound his pride. He could start causing some minor disruptions inside Naruto, like making it harder for Naruto to access his chakra.
The Z - fighters like Krillin and Yamcha would be curious about Naruto. Krillin might try to befriend him quickly, while Yamcha might be a bit jealous if Naruto starts getting a lot of attention. In the Naruto world, characters like Sakura and Sasuke might not even notice Naruto's disappearance at first if he has been neglected. But later, they might realize the importance of Naruto when things start to go wrong in their world without him. And in the Dragon Ball universe, Piccolo would be very watchful of Naruto, trying to figure out his motives and if he poses any threat to the safety of the planet.
In this fanfiction, Goku Black's evil nature could be tempered by the values of the Naruto world. The strong sense of community and loyalty might make him question his own motives. Naruto would be the one to show him a different path. Their relationship could develop from enmity to something like a begrudging respect. And as they face challenges together, they would both grow as characters, with Goku Black becoming less of a villain and more of an anti - hero.
Yes, there might be. The concept of crossovers in fanfiction is very common, and with the popularity of both Naruto and Dragon Ball series, it's not unlikely that someone has created a fanfic where Naruto shows admiration for Goku Black. However, it may be a rather niche concept within the vast world of fanfiction.
She might feel guilty. Since they are siblings, she could be aware of Naruto's neglect and try to make it up to him in small ways, like sharing her food or secretly leaving him little gifts.
He might become withdrawn. Naruto, who was always so full of life and energy, could start to keep to himself more. He might stop seeking his family's approval and focus on his own path, whether it's through training or making new friends outside of the family.
They could become resentful. They might start to avoid Naruto altogether and refuse any summons. They could also start to act out in the forest, scaring away other animals or causing minor disruptions just to show their displeasure.
Sasuke could also oppose Black Goku. With his Sharingan and Rinnegan, Sasuke has a wide range of powerful abilities. He is also very intelligent and strategic. Sasuke would likely see Black Goku as a threat to the balance of power in the Naruto universe and would step in to fight him, especially if it involved protecting his friends or the ninja world in general.