Adventure is also a common theme. Picture Ranma traveling through the Pokemon regions, facing different Gym Leaders and trainers. He would bring his martial arts expertise into the Pokemon battles, which would be a new and exciting take on the typical Pokemon adventure.
One common theme is the interaction between the unique characters from Ranma and the world of Pokegirls. For example, how Ranma's martial arts skills might be used in the Pokegirls' universe. Another could be the exploration of different genders, as in Ranma's curse, in the context of Pokegirls.
One common theme is the clash of different worlds. Inuyasha is set in a feudal era full of demons and magic, while Ranma has a more modern (but still very Japanese - culture - influenced) world with martial arts and strange curses. So when the two are crossed over, the difference in their worlds often leads to interesting plotlines. Another theme is the interaction between the characters. For example, Inuyasha's brash and impulsive nature vs Ranma's own quick - tempered but also comical personality can create a lot of humorous and tense situations.
Friendship is also a big theme. Since both Ranma and Naruto value friendship highly in their original series, in the crossovers, they usually form a strong bond. They learn from each other's strengths and support each other in facing various challenges.
The setting is a common element too. When Ranma crosses over into a different world, the new setting affects his actions and the overall story. For example, if he crosses over into a post - apocalyptic world, he has to use his martial arts in new ways to survive. And of course, the humor that is characteristic of Ranma 1/2 often gets transferred and combined with the humor (if any) of the crossed - over universe.
Often, there are themes related to identity. Ranma's dual - gendered nature can lead to stories about how he reconciles his male and female selves, especially in romantic or sexual situations as seen in lemon fanfictions. There may also be themes of jealousy or competition among the characters who are interested in either male or female Ranma.
One common theme is the clash of different worlds. Ranma 1/2 has a more martial - arts - based world, while Tenchi Muyo is more sci - fi. So, in crossovers, you often see how these two different types of worlds collide. Another theme is the exploration of new powers. Characters from both series might discover new abilities when they interact.
One common theme could be the challenges of the female Ranma dealing with pregnancy in a crossover universe. Maybe she has to adapt to different cultures or magical elements from the crossover.
One common theme is friendship. In both Pokemon and Fairy Tail, friendship is a very important aspect. So in crossovers, characters from both universes often form new friendships or strengthen existing ones through their shared adventures. For example, a Pokemon trainer might become friends with a Fairy Tail mage while they are trying to solve a common problem.
One of the main themes is the exploration of different worlds. The Pokemon world and the Digimon world have their own unique features, and in the crossover fanfiction, characters often get to explore both. Also, there's the theme of adaptation. The characters, whether they are Pokemon trainers or Digimon tamers, need to adapt to the new situations when they encounter the other world's elements. For example, a Pokemon trainer might need to understand the concept of Digivolution in a Digimon - filled area. There's also the theme of unity against a common foe. They often face threats that require the combined strength of both Pokemon and Digimon.
One common theme could be the clash of cultures. Naruto's ninja culture and the Pokemon trainer culture are very different. So exploring how characters adapt to this new culture they're exposed to is a theme.