A common theme is the crossover of powers. For example, seeing how Naruto's jutsu would work in the world of quirks or vice versa. Another theme is the comparison of the two main characters' growth. Naruto and Deku both start as underdogs and rise to be powerful, so fanfictions often explore how they could learn from each other's journey. Friendship is also a big theme, like Naruto making friends with the students in MHA and how their different personalities interact.
In these fanfictions, the exploration of new abilities is a major theme. Writers like to create hybrid abilities by combining Naruto's ninjutsu with MHA quirks. The theme of mentorship also exists. For instance, could All Might be a mentor to Naruto in the MHA world? Or could Kakashi mentor some of the MHA students? Another important theme is the concept of family. Since both Naruto and some MHA characters have complex family situations, fanfictions often explore how they could relate to each other in terms of family bonds and the lack thereof.
One of the most prevalent themes is the clash of cultures. The ninja culture from Naruto and the hero society in MHA are very different. Fanfictions play with this by showing how characters from one world react to the other world's norms. Redemption is another theme that pops up. There might be a character from Naruto who has a troubled past and finds a new way to redeem themselves in the MHA world. And of course, the theme of heroism is explored in different ways, whether it's Naruto's view of heroism influencing MHA characters or the other way around.
A common theme is power. Both Naruto and 'boku no hero academia' deal with characters having unique powers. So, in fanfiction, it's often about how the characters' powers interact or compare. For example, Naruto's chakra control compared to the quirk control in 'boku no hero academia'.
Power and how it attracts others is often a theme. In these fanfictions, the main character with unique powers, like Naruto's Nine - Tails chakra or a hero's quirk in Boku no Hero Academia, might draw the attention of multiple characters, leading to a harem situation. Also, the idea of friendship evolving into something more within the harem is quite common.
Another common theme is the idea of a different perspective. Fanfictions may show events from the Hero Killer's point of view, which is different from the typical hero - centered view in the original series. This can make readers see the world of My Hero Academia in a new light, understanding the frustrations and reasons that led the Hero Killer to do what he did. It can also create more complex relationships between characters as they start to understand each other's motives better.
One common theme is the exploration of different power systems. Since Naruto has its chakra-based powers and My Hero Academia has quirks, fanfics often explore how these two power systems interact when a female Naruto is involved. For instance, how her ninjutsu might be mistaken for a really powerful quirk.
A common theme is the exploration of power. Since both universes have characters with unique abilities, fanfictions often delve into how these powers are used, abused, or developed further.
One common theme is the exploration of Stain's sense of justice. Since he has a very distinct view on what makes a true hero, fanfictions often delve into this concept, comparing it with the more mainstream ideas of heroism in the 'boku no hero academia' universe.
One common theme is friendship. Just like in the original series, the pets and their owners or the pets among themselves form strong bonds of friendship. For example, a dog might be extremely loyal to its hero owner and help them in times of need.
One common theme is redemption. Since Garou is often portrayed as an anti - hero or a villain, many fanfictions explore his path towards redemption. Another theme is power struggle. Given the power - filled world of My Hero Academia, fanfictions often deal with how Garou's power relates to that of the heroes and villains.
The theme of adaptation is also prevalent. Characters from both sides have to adapt to the new and strange world they find themselves in. For instance, the heroes in My Hero Academia might have to adapt to the more gritty and dangerous world of Hellboy, and vice versa. This can lead to character growth and new relationships being formed.
One common theme is the exploration of different character backstories. Since the original series has a large cast, fanfiction often dives deeper into the pasts of characters that may not have had as much screen time. For example, we might learn more about a minor character's family or how they got their quirk.