Yes, there might be such fanfictions. Many fanfic writers like to explore different timelines and scenarios for their favorite characters. In a 'naruto is an old man' fanfic, Naruto could be having adventures that are different from his youth, perhaps mentoring the new generation with his years of wisdom.
His old team would be Sasuke, Sakura, and Kakashi. They are the main characters associated with Naruto's early team experiences. In the context of this fanfic where they die, it's likely to have a huge impact on Naruto and the overall story.
One possible fanfiction could be about Naruto at 17 finally getting to know more about his mother Kushina through some kind of time - travel or spiritual encounter. Maybe he discovers some hidden jutsu she created and uses it to defeat a new enemy in the village.
One aspect of such a fanfiction could be the daughter's journey to find her own identity. With Naruto as her father, there's a lot of pressure and expectation. She might struggle to carve out her own path, different from what Naruto has done. And Naruto, as a father, has to learn to let her make her own mistakes and grow. They could have adventures together that help her in this self - discovery process.
I'm not sure specifically as there could be many different takes in a fanfiction with that title. It might be about Naruto in a very different time period, perhaps exploring his character in an ancient or far - future setting.
It's possible for a 10-year-old to read Naruto comics. However, parents should consider if their child is ready for the action and themes. Some kids at that age handle it fine, while others might find it a bit intense.
He could also interact with the new generation of ninjas in his own village who might see him as a relic of the past at first. But as they get to know him, they learn valuable lessons from his experiences. He could train them in unique ways that combine his old - school ninja techniques with the new knowledge and abilities that the new generation has developed.
Naruto would likely be devastated. His old team was an important part of his early life in the ninja world. He might initially go into a state of shock, unable to believe that they are gone. Then, his grief could turn into anger, vowing to find out who was responsible and make them pay.