A less obvious but important theme is sacrifice. Both Naruto and Ichigo are no strangers to sacrificing for their friends and the greater good. In fanfiction, this can be amplified when they are in a situation together. Maybe one has to sacrifice their power to save the other, or they both have to make sacrifices to protect the new world they find themselves in. This theme adds depth to their relationship and the overall story.
Well, a major theme is identity. Naruto, who has his own identity as a ninja, starts to question or expand his identity after being influenced by Ichigo. Additionally, themes of heroism are prevalent. Both characters are heroes in their own right, and in the fanfiction, they might inspire each other to be even greater heroes.
A common theme is the overcoming of differences. Since Ichigo and Naruto come from different anime universes with different powers and cultures, fanfictions often explore how they bridge those gaps in a romantic context.
One common theme is the power combination. Since both Naruto and Ichigo are powerful in their own universes, in these crossovers, their powers might be combined in interesting ways. Another theme could be friendship or rivalry. They could start as rivals due to their different backgrounds and powers, and then develop a friendship. And sometimes, there's the theme of saving the combined universe they find themselves in, which is a mix of Naruto's and Ichigo's worlds.
The theme of different worlds colliding is also quite common. Ichigo is from the 'Bleach' universe and Naruto from the 'Naruto' universe. Fanfics play with how these two very different worlds interact when they meet. It can lead to interesting cultural exchanges between the characters too.
One popular theme is adventure. Writers often create new adventures for Rukia and Ichigo, where they face powerful enemies together and their relationship deepens through these challenges.
A common theme is the struggle between light and dark. Ichigo represents the light side, while Hollow Ichigo is the dark. Their relationship in yaoi fanfiction often shows how these two opposing forces interact and potentially find a balance. Another theme could be self - acceptance. Ichigo accepting his Hollow side in a more intimate way is often explored.
Love and attraction are quite common. It's about two very different beings being drawn to each other.
Another theme is friendship. Given that both characters are known for their strong bonds with their friends in their original series, fanfictions like to explore how they would form a friendship with each other. They might start off as rivals and then grow to respect and trust one another over time.
One common theme is power combination. Since both Naruto and Ichigo have distinct and powerful abilities, many fanfictions explore how these powers can be combined. For example, Ichigo's swordsmanship combined with Naruto's ninjutsu.
One common theme is friendship. Since it's 'everyone x ichigo', it often shows Ichigo forming strong bonds with different characters. Another theme could be power - up. Ichigo might gain new powers or abilities through his interactions with various characters. Also, there can be themes of redemption, where Ichigo helps other characters who have made mistakes.