The shinobi in Naruto's village would likely be divided. Some would support Naruto's decision wholeheartedly, believing that any unknown power like the Kamen Rider's is dangerous. Others might be more skeptical, especially those who are more open - minded or have interacted with the Kamen Rider. As for the Kamen Rider himself, he would probably be angry and confused at first, but then determined to prove his worth and return.
Ruby would be all in. She has an open - minded and adventurous spirit, so she'd be quickly drawn into the unique storylines of the Kamen Rider fanfiction. It would be like opening a new door to a whole different fictional universe for her.
One possible plot could be that in a world where Naruto and Kamen Rider exist together, Naruto, for some reason, sees the Kamen Rider as a threat to his village's safety. Maybe the Kamen Rider's powers are misconstrued as dark magic. So Naruto, in his role as Hokage or a high - ranking shinobi, banishes the Kamen Rider. This could lead to the Kamen Rider having to prove his innocence and find a way back to the village to clear his name.
Naruto's ability to sense chakra could be used to detect hidden enemies in the Kamen Rider Drive world. In that world, there might be villains who can cloak themselves using technology. But Naruto's chakra - sensing ability would cut through that and allow him and Drive to be one step ahead in battles. And Drive could use his gadgets to then counter - attack these enemies.
The worlds could merge through a mysterious portal. This portal could be created by some powerful jutsu in Naruto's world that goes wrong or by an experiment in Build's world. Once the worlds start to merge, the characters would be in for a shock. The ninjas in Naruto's world would see the advanced technology of Build's world, and the people in Build's world would be amazed by the use of chakra.
Naruto could also become angry. He might feel betrayed by Tsunade and the village. This anger could fuel his determination to prove his innocence or worth. He could set out on a journey to become even stronger, so that one day he could return and show everyone that they were wrong to banish him. He might also start to question his own beliefs and values, which have been centered around the village and its people.
In a more complex way, they could be brought together by a common enemy. For instance, an evil force that wants to steal the power of both chakra and the magic in the Kamen Rider world. They would then need to communicate and strategize to fight this enemy. This would involve Naruto explaining his ninja world concepts like jutsu and clans, while Kamen Rider Wizard shares his knowledge about the Phantoms and magic rings.
Ruby, with her eagerness to grow as a fighter, would study the Kamen Rider's fighting styles and abilities in the fanfiction. She'd be inspired to incorporate some of those moves into her own combat repertoire. Weiss, being the strategic one, would look at how Kamen Rider approaches different situations in the fanfiction and apply those concepts to her own planning. Blake would see the Kamen Rider's fight against darkness as similar to her own fight against the Grimm. She might draw strength from the Kamen Rider's unwavering determination. Yang, always up for a challenge, would be excited by the physical feats that Kamen Rider performs in the fanfiction and strive to match that level of power.
First, you need to understand the basics of both universes. Know the characters, their powers, and the settings. Then, think of an interesting premise like a Kamen Rider arriving in the Naruto world. Next, plan out your plot. Decide how the characters will interact and what challenges they'll face.
First, you need to study both universes well. Know the powers, personalities, and backstories of the characters from Kamen Rider Gaim and Naruto. Then, come up with an interesting concept for the crossover. It could be something like a portal opening between the two worlds.
Some villagers might be in shock. Kushina was an important figure in the village's history, being Naruto's mother. There would be those who would question Naruto's decision and lose faith in him. They might start to fear for their own safety, thinking that if someone like Kushina could be banished, they could be next.