Hinata's family would also have to deal with the emotional aspect. They love Hinata in her normal state, and now they have to adjust to this new form. They might start to remember when Hinata was actually a baby before and all the hopes and dreams they had for her then. Some of the more conservative members of the family might be more hesitant to let Naruto be around her, but the more open - minded ones could see that Naruto's presence is actually good for her in this state. And they would all be united in their goal to get Hinata back to her normal self.
Well, one possibility is that Naruto would be extremely protective. He has always cared for Hinata in some way, and with her as a baby, he'd likely take on a very nurturing role. Maybe he'd try to find a way to turn her back, or he'd just enjoy taking care of her like she was his own little sister or something. He could introduce her to all his friends in the village as his 'new little friend' and they'd all be super curious about how this happened.
In this fanfiction, it could be that Hinata's memories are still somewhat intact even as a baby. So she might still show signs of her shyness towards Naruto. She could blush when Naruto gets close to her while taking care of her. And perhaps, this situation could lead to Naruto realizing his deeper feelings for Hinata in a more protective and caring way. He would start to see her in a different light and understand how important she is to him on a whole new level.
I think Naruto would be one of the most affected. Since he and Hinata have a special connection, having her turn into a baby would completely change their dynamic. He'd have to step up and be responsible in a new way.
Perhaps the baby could be named Kazuki. It gives a sense of being strong and noble, which would be fitting for the child of Naruto and Hinata. In fanfiction, the name could also be symbolic of a new beginning or a special power that the baby might possess, like being related to the combination of Naruto's Nine - Tailed Fox power and Hinata's Byakugan abilities.
The baby might inherit Naruto's ability to use chakra in large amounts and his signature Rasengan. Since Naruto has such a vast amount of chakra, it's likely that his child would also have a significant chakra reserve.
Obviously, Naruto himself is the main character in this situation. His friends like Sasuke and Sakura are very likely to be involved. They would be the ones taking care of him, trying to figure out how to turn him back to normal. Kakashi Sensei would also probably be there, guiding them and trying to keep Naruto safe.
One popular plotline could be about the challenges they face as new parents. For example, Naruto might struggle to balance his Hokage duties with being a father. Hinata, on the other hand, could be dealing with the pressures of raising a child with such a high - profile father. Another plotline might involve their baby showing some unique ninja abilities from a very young age, and they have to figure out how to train and protect the child at the same time. There could also be a plot where their baby gets kidnapped by an old enemy seeking revenge on Naruto, and they have to embark on a dangerous rescue mission.
You can try fanfiction websites such as FanFiction.net or Archive of Our Own (AO3). On these platforms, you can simply search for 'Naruto Hinata baby' in the search bar, and a list of relevant fanfictions will pop up.
In 'Naruto Hinata baby fanfiction', a common theme is the baby inheriting unique traits from both parents. For instance, the baby might have Naruto's blond hair and Hinata's Byakugan - like eyes. The story could then explore how the baby uses these combined abilities to protect the village in a time of need. Some fanfictions also delve into the relationship between the baby and other characters like Kakashi, who could be a mentor figure to the young one.