I'm not entirely sure if there is a specific fanfiction with Naruto's grandfather being Madara Uchiha. But in the realm of fanfiction, anything is possible. Writers might be intrigued by the idea of mixing Naruto's story with the power and history of Madara Uchiha in such a way. It could lead to some really interesting plot developments, like how Naruto's character might be different growing up with such a powerful and infamous figure as his grandfather in the backstory of the fan - created world.
Some Tobirama fanfictions focus on his relationships with his brothers. It could explore how his bond with them influenced his decisions and actions. For instance, how the loss of his brothers affected his leadership style. These stories add more depth to his character, making him more than just a powerful ninja in the Naruto universe.
Well, it would completely turn the story upside down. The family relationships are so crucial in Naruto. If Naruto were Kushina's grandfather, it would mean a whole new set of character dynamics. For example, Minato's relationship with Naruto would be extremely different. Instead of being his father, he would be some distant relative. And Naruto's connection to the Uzumaki clan would be much more complex and ancient. It could also change how Naruto obtains his powers. Maybe he would inherit some ancient Uzumaki abilities in a different way than in the original story.
It would be very different from the original Naruto story. Naruto might have access to some of the Uchiha secrets and powers much earlier. His view of the Uchiha clan and the history of the ninja world would be shaped by Madara's influence. Maybe he would be more powerful from the start, having inherited some of Madara's abilities or knowledge.
In the fanfiction, a possible backstory could be that Naruto, after achieving great power and peace in his own time, decided to use his abilities to explore the past. During this exploration, he accidentally or purposefully got involved in the lives of his ancestors. He might have fallen in love with a woman from the Uzumaki clan in the past and had children. These children then passed on their genes through generations until Kushina was born. It could also be that there was some sort of experiment by an ancient shinobi that went wrong or right (depending on how you look at it). This experiment somehow connected Naruto's future self to be Kushina's grandfather by altering the fabric of time and family relations in a very strange way.
My grandfather was an ordinary yet extraordinary person. He was born in an ordinary family and was diligent and studious when he was young. After growing up, he became an engineer and made great contributions to the country.
Grandpa is very family-oriented. Every time we come home, he always welcomes us warmly and cooks delicious food for us. He would also tell us stories about his childhood so that we could feel the customs of his era.
Grandpa was also very kind and often helped those who needed help. Once, I saw my grandfather helping an old man buy breakfast on the street. The old man was very grateful and kept thanking him. Grandpa just smiled and said,"This is what we should do."
I'm very grateful to my grandfather. He's my spiritual pillar, making me feel the warmth and love of a family. I hope that I can be an outstanding person like Grandpa in the future, contribute to society and bring happiness to my family.
Another theme is his relationship with the Uchiha clan. Given the complex history between the Senju and the Uchiha, fanfictions can explore how Tobirama's views on the Uchiha affected the village's future. This can involve his suspicions of the clan and how he tried to manage them.
Grandfather's Garden was one of the protagonists in Xiao Hong's novel, Life and Death Field, which narrated the prosperity and decline of a family in Haerbin. The novel takes the family as the background, and through the relationship between the family members, it shows the social style and human weakness of the time in Haerbin.
Well, here's a story. There was a beautiful princess. She was locked in a high tower by an evil witch. Her grandfather had left her a magic key before. She used the key to open the door of the tower. Then she started her journey to find the witch and break the spell. Along the way, she met a brave knight and they fought together against the witch.