I think the character interactions would be the most interesting. Naruto's friends interacting with Ruby in Naruto's body and vice versa. Their different ways of speaking and behaving would create a lot of confusion and humor. Also, how they would adapt to each other's families and teams would be really engaging. For example, how would Ruby deal with Naruto's relationship with Iruka - sensei or his rivalry with Sasuke? And how would Naruto handle Ruby's relationship with her team members in her world?
Well, if Naruto and Ruby were to body swap in a fanfiction, the story could start with a strange magical or scientific accident. Naruto might be confused in Ruby's body, trying to figure out her powers and the new world around him. He'd probably be eager to use her powers in his own Naruto - style of combat, which could lead to some really interesting and comical situations as he tries to adapt.
Body swap in Naruto fanfiction often serves as a tool for character development. When characters switch bodies, they not only have to deal with the physical differences but also the mental and emotional aspects. For instance, if Naruto were to swap bodies with Hinata, he would get a first - hand experience of her shyness and her deep admiration for him. This could lead to a change in their relationship in the fanfiction story, perhaps making Naruto more aware of Hinata's feelings and more considerate towards her.
One idea could be Naruto swapping bodies with Kakashi. Naruto would then have to deal with Kakashi's more laid - back attitude towards life while also handling his responsibilities as a teacher. He might also be able to learn some new jutsu from Kakashi's memories. Another idea is Naruto swapping with Gaara. This would be interesting as they both have had very different upbringings and Naruto could understand Gaara's pain more deeply. It could also lead to a better understanding between the two villages.
The main characters are Naruto and Ino, obviously. Since it's a body - swap fanfiction about them, they are the central focus. They are the ones who will experience the strange situation of being in each other's bodies and will have to deal with all the consequences.
One idea could be Naruto swapping bodies with Sasuke. This would lead to a lot of chaos as they have to deal with each other's relationships. Naruto in Sasuke's body would have to face the Uchiha clan's expectations, while Sasuke in Naruto's body would have to handle Naruto's friends in Konoha. Another idea is Naruto swapping with Kakashi. Naruto would get a taste of being a more experienced ninja with a lot of knowledge, and Kakashi would have to deal with Naruto's energetic and sometimes reckless nature. And also, Naruto swapping with Hinata could be interesting. Hinata in Naruto's body might become more confident, and Naruto in Hinata's body could gain a new perspective on her feelings for him.
Comedy is also a big theme. There are often hilarious situations like when Naruto, in Sakura's body, tries to act girly but fails miserably or when Sakura, in Naruto's body, has to deal with Naruto's crazy eating habits. These comical elements add a light - hearted touch to the fanfiction.
Another plot could be that the body swap was caused by a strange jutsu gone wrong. In the process of trying to fix it, they end up learning more about each other. Naruto could understand Ino's insecurities better, and Ino could see Naruto's determination and the weight of his responsibilities more clearly. This new - found understanding could change their relationship for the better even after they swap back.
Naruto and Sasuke are very common in Naruto body swap fanfiction. Their complex relationship and different personalities make it an interesting swap. Also, Naruto and Kakashi are often used. Kakashi is Naruto's teacher and has a lot of skills and knowledge that Naruto could experience in a body swap. Hinata is another character who is sometimes involved in body swaps with Naruto. Her shy nature compared to Naruto's boldness creates a lot of potential for interesting storylines.
One popular Naruto Sakura body swap fanfiction is 'Swapped Perspectives' on FanFiction.net. It delves into how Naruto and Sakura adjust to being in each other's bodies and the comical as well as the more serious situations that arise. The story does a great job of staying true to the characters' personalities while exploring this unique body - swap scenario.