Naruto's outgoing and boisterous personality would make Deku more confident. He would probably be more upfront and less shy. Naruto's strong sense of justice would also intensify Deku's already existing desire to help others.
In a fanfiction where Naruto is reborn as Deku, there would be a lot of potential for unique storylines. Naruto's experience with facing powerful enemies in the Naruto world could give Deku an edge. He might be more aggressive in battles compared to the original Deku. Also, Naruto's ability to make friends and form bonds could strengthen Deku's relationships with his classmates even further. And his understanding of power and how to grow stronger could lead to a faster development of Deku's abilities.
Obviously, Deku would be the main character since it's about being reborn as him. But other characters like All Might are also likely to be important. All Might was a huge influence on Deku in the original story, and in the fanfiction, he could still play a crucial role in mentoring the reborn Deku.
One interesting idea could be the exploration of Deku's powers from a new perspective. Since the character is reborn, perhaps they gain an enhanced understanding of One For All or develop new ways to use it more effectively. Another idea might be the relationships with other characters. The reborn Deku could form different bonds, like a closer friendship with Bakugo early on, changing the dynamics of their story.
One antagonist could be Orochimaru from Naruto's world. He could be interested in the power of Quirks in Deku's world and try to capture Deku to study his power. He would be a formidable foe as he is a master of ninjutsu and has a lot of devious plans.
One possible plot could be Naruto and Deku finding themselves in a strange new world together. They have to combine their unique skills, Naruto's ninjutsu and Deku's One For All power, to face the challenges of this world and find a way back home.
I think it's a toss-up. Deku has potential and is constantly evolving, but Naruto's strength and strategic thinking give him an edge. It could come down to the specific circumstances of the fight.
Well, perhaps the plot could revolve around a tournament. In this 'naruto luffy deku crossover fanfiction', they all enter a huge, multiverse - wide tournament. Naruto shows off his cool jutsu, Luffy surprises everyone with his stretching attacks, and Deku displays his newfound strength. Along the way, they have to team up against some really tough opponents who don't play fair, and they grow closer as friends.
Yes, there are likely fanfictions with this concept. The Naruto fandom is vast and creative, and the idea of Naruto being Tobirama reborn is an interesting one that some fans may explore in their writing. However, the quality and availability of such fanfictions can vary greatly. You might need to search on popular fanfiction websites like FanFiction.net or Archive of Our Own to find them.
His friends could come to the rescue. Bakugo, for instance, might use his explosive power to break into Toga's hideout. He's always been competitive with Deku, but he also cares about him deeply.