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.
It's really hard to say. Naruto has the power of the Nine - Tails and all his ninja training. Luffy has his Devil Fruit powers and his unwavering will. Deku has One For All which gives him incredible strength. But if I had to choose, I might say Naruto. His ability to create thousands of clones and use powerful jutsu like Rasengan could give him an edge in many battles.
In 'deku meets future deku fanfiction', perhaps the future Deku warns the present one about upcoming threats. He could tell him about villains he'll face in the future and how to defeat them. This would give the present Deku an edge in his battles and also in his growth as a hero.
One possible plot could be that Villain Deku is on a mission to undermine the hero society and crosses paths with Hero Deku. They engage in a fierce battle where Villain Deku taunts Hero Deku about his ideals. In the end, Hero Deku manages to get through to a small part of Villain Deku's conscience, leaving him with some doubts about his villainous path.
Another plot might involve the older Deku being from an alternate timeline. He shows the younger Deku different ways he could have developed his skills and relationships, which makes the younger Deku reevaluate his own path as a hero.
The theme of acceptance is quite common. Fem Luffy often has to be accepted by the other characters in the story. This could be because she's different due to her gender or her slightly different personality traits. Also, the theme of self - discovery is prevalent. As fem Luffy navigates the pirate world, she discovers more about herself, her abilities, and her place in the grand scheme of things.
In the manga, Deku experiences various ups and downs. He not only becomes stronger physically but also matures emotionally as he takes on greater responsibilities. There are also many unexpected plot twists that shape his journey.
It could lead to a completely different character dynamic and story arc. Maybe she'd face different challenges and have a unique perspective on being a hero.
The main differences are in their expressions and some minor details of personality. In the manga, Deku might seem a bit more intense, while in the anime, he's sometimes presented a bit softer.