One idea could be that Luffy accidentally enters a world filled with lemon - themed islands. There, he meets characters who have powers related to lemons, like creating lemon - shaped shields or shooting lemon - juice blasts. And he has to use his Gum - Gum powers in new and creative ways to get along and find his way back to his own world.
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.
One possible plot could be that Lemon, with her unique abilities, somehow gets transported to the Dragon Ball universe. Goku, being the curious and friendly Saiyan he is, decides to help her find her way back. Along the way, they face some common enemies. Goku teaches Lemon about ki and fighting techniques, and Lemon shows Goku some of her own skills from her world. This could lead to an epic team - up against a powerful villain who threatens both their worlds.
One possible plot could be that Goku accidentally travels to a world where Lemon is a powerful being. They start as rivals but gradually learn from each other's strengths. Goku could teach Lemon about his fighting techniques and his Saiyan heritage, while Lemon could show Goku some unique powers or skills from their world. Then they team up to face a common enemy that threatens both of their worlds.
It could be a lemon - loving pirate who has a grudge against Luffy for some reason. Maybe Luffy accidentally destroyed his precious lemon grove on an island. So this pirate, with his crew of lemon - themed fighters, constantly tries to sabotage Luffy's adventures and steal his treasures.
One possible plot could be that Miss Valentine falls for Luffy during one of their encounters. She might try to use her charm to get closer to him, but Luffy, being Luffy, is initially oblivious. As the story progresses, he starts to notice her in a different way and they embark on an adventure together where they have to rely on each other.
One possible plot could be that Naruto is somehow transported to the underworld. There, he meets a powerful underworld character who has a grudge against Konoha. But Naruto, with his determination, tries to make peace. Along the way, he discovers a new form of chakra related to the underworld's energy. And as for the 'lemon' aspect, perhaps there could be a budding romance between Naruto and a female underworld dweller where they share some tender, romantic moments.
A great plot could be that an Archangel is sent to the Naruto universe by mistake. Naruto then has to help the Archangel adapt and survive in his world. As they spend time together, they start to understand each other on a deeper level. The 'lemon' aspect might be that they have some cute and innocent moments of physical closeness, like when Naruto has to carry the injured Archangel. This closeness makes them realize they have feelings for each other, and they then have to deal with the implications of their relationship in their respective worlds.
One possible plot could be that Naruto, with his godlike powers, enters a crossover world. He might meet characters from another universe and use his skills to solve problems there. For example, if it's a crossover with a magical world, Naruto could use his chakra in new and unexpected ways to fight against dark magic. His 'godlike' status would give him an edge, allowing him to adapt quickly and form alliances with different characters.
Since the 'lemon' part makes it a bit ambiguous, but if it's a regular fanfiction about Luffy and Makino, it might explore their relationship in the context of Luffy's journey. For example, Makino could be a source of support for Luffy in a more emotional way, like when he has doubts about his role as a pirate. The fanfiction could show how their interactions develop over time and how they influence each other's lives.
One possible plot could be that Luffy somehow gets transported to the Naruto world. He might team up with Naruto and his friends. Luffy's rubber powers would be a novelty in the ninja world. For example, he could use his stretching abilities to reach places that are difficult for ninjas to get to, or to disarm enemies from a distance. His carefree and fearless attitude could also inspire the Naruto characters to be more adventurous in their own quests.