She might be overjoyed. After all, Naruto is her son. She could immediately rush to find him and embrace him tightly, tears of happiness streaming down her face.
Well, one possibility is that Dark Naruto would be overjoyed. After all, Kushina is his mother. But at the same time, he could be very conflicted. His dark side might make him suspicious of her motives. He could test her in various ways to see if she's really who she says she is. And Kushina, on her part, would probably be heartbroken to see what her son has become.
It depends on how they left things before Clark was thought to be dead. If they were on good terms, they might quickly become close again. But if there were unresolved issues, those could resurface and make things difficult.
Sasuke might be initially shocked. He has always seen Naruto as a rival and suddenly finding out Naruto is a girl could completely change his perception. He may start to view Naruto in a more protective way, as his traditional views of gender roles might make him feel the need to safeguard her now that he knows she's female.
If Naruto found Kushina alive in a fanfiction, it might lessen his focus on Sasuke for a while. He'd be more centered on getting to know his mother. But in the long run, it could also make him stronger and more determined in his rivalry with Sasuke. With Kushina's support, Naruto would have a new source of motivation to prove himself not just to Sasuke, but also to his mother.
If the Fire Daimyo finds out Naruto is alive in fanfiction, it depends on how the author wants to develop the story. Maybe the Daimyo will be overjoyed as Naruto is a great hero. He could hold a grand celebration in Naruto's honor. However, there could also be a darker side. Some of the Daimyo's advisers might see Naruto as a threat to their power. They might try to plot against Naruto, which would then lead to a whole new series of adventures for Naruto to face and overcome.
Well, it could lead to a lot of things. Maybe Bella will be shocked at first and then feel a mix of anger and relief. She might confront Clark about why he let her think he was dead. Their relationship could either be repaired or become more strained depending on Clark's reasons for faking his death.
One thing that could happen is that Dark Naruto would be filled with a mix of emotions. He could be angry at the village for hiding this from him, yet also feel a glimmer of hope. This discovery might make him question his loyalty to the forces that led him to become 'dark'. He might also feel a sense of longing for the family he thought he had lost.
Well, if Clint discovers Coulson is alive in a fanfic, it could start with Clint being in disbelief. He might question how it's possible at first. Then, as he realizes it's true, he could feel a mix of emotions. There could be a sense of relief, because Coulson was like a friend and mentor to him. They might start to share stories of what they've been through since they last saw each other. And this new - found reunion could be the start of a whole new adventure for them, perhaps even leading to a new team - up against a common enemy that they thought they couldn't face without each other.
Well, one possibility is that Naruto would be overjoyed. He has always longed for his mother's love. He might spend days just talking to her, sharing all his experiences, from his training with Jiraiya to his battles against the Akatsuki. Kushina would probably be extremely proud of him and would start teaching him some Uzumaki clan jutsus that were passed down in the family. And Naruto's relationship with the village would also change. He would no longer be the orphan that everyone pitied. Instead, he would be the son of a hero, which could bring a whole new dynamic to his standing in Konoha.