Friendship is a very common theme. Since it's about Naruto and his friends in a crossover, it often shows how their bonds are strengthened or tested in the new situations. For example, they might have to rely on each other more than ever.
Another theme is the exploration of new powers. In the crossover, Naruto and his friends might encounter different abilities or challenges that force them to discover new powers within themselves or as a group. It makes for some really interesting storylines.
A common theme is the clash of cultures. Naruto's ninja culture from his world is very different from the military - and magic - based culture in 'The Gate'. So, exploring how these two cultures interact is often seen. For example, Naruto might introduce the concept of chakra to the people of 'The Gate' world.
Character growth is also a major theme. In a long 'Naruto' crossover fanfiction, Naruto usually has to face new challenges in the crossed - over world. This forces him to adapt and grow in ways he didn't in his original 'Naruto' world. For instance, in a crossover with the 'Fullmetal Alchemist' world, he has to learn about alchemy and its rules, which broadens his understanding and skills.
One common theme is power. The shinju is a powerful entity, and when crossed over with Naruto, it often involves the characters either seeking its power or having to deal with the consequences of its power. For example, in many fics, Naruto might be tempted by the shinju's power to achieve his goals more quickly.
A common theme is the clash and then the fusion of different power systems. Naruto's chakra - based ninja skills and the magic from the other universe, like spells in Harry Potter or magic in Fairy Tail, often start by being at odds but then find a way to work together.
A major theme in these fanfictions is identity struggle. Naruto, being in a chaotic crossover, may question who he is and how he fits into this new, disordered world. Also, the theme of friendship and alliances is quite common. He has to form new alliances with characters from the chaotic world, and these relationships are explored in depth. For instance, he might team up with a chaotic being who has different motives, and they have to work together despite their differences.
One common theme is redemption. Naruto, being banished, often has to prove himself all over again in the new crossovers, seeking redemption for whatever led to his banishment in the first place.
One common theme is the idea of over - coming adversity. Since Naruto is blind, he has to find ways to be as strong or even stronger than he was before. Another theme could be the discovery of new powers or abilities that compensate for his blindness.
Well, in 'naruto uzumaki crossover fanfiction', a frequent theme is the exploration of different values. When Naruto crosses into a world like the Hunger Games, his values of loyalty and perseverance are put to the test against the survival - of - the - fittest mentality there. Another common theme is the discovery of new abilities. Sometimes, the crossovers result in Naruto developing new skills by combining his ninja techniques with the powers or technologies of the new world he enters.
One common theme is the clash of different cultures. Naruto's world is more about ninja villages and modern - ish (for a fantasy world) structures, while Inuyasha's is a feudal era world. So when they cross over, there's often exploration of how these different cultures interact.
Power - up is a common theme. For example, a character from Naruto might gain some of the powers of a Soul Reaper from Bleach. This could be something like Naruto getting the ability to use a Zanpakuto.