Well, in these types of fanfictions, a frequent element is the adaptation of character personalities. The bold and determined nature of Naruto is often maintained, and it meshes with the heroic and sometimes quirky personalities in My Hero Academia. Also, the fanfictions usually have a lot of action scenes. The ninja skills from Naruto and the quirk - based battles in My Hero Academia blend together, creating exciting fight sequences. And of course, the harem part means there are a lot of relationship - building moments, with the main character having to navigate the feelings of multiple female characters.
One common element is the crossover aspect. Since it's a fanfiction combining Naruto and My Hero Academia, there's usually a way for the Naruto characters to enter the MHA world or vice versa. Another is the harem setup itself. There are multiple female characters, often from both series, who are attracted to the main male character, whether it's Naruto or a character inspired by Naruto. Power - ups are also common. The main character might gain new abilities or combine the powers from both universes in these fanfictions.
A great Naruto and My Hero Academia harem fanfiction is 'Harem of Two Worlds'. It imagines a scenario where the two universes collide and Naruto finds himself in the middle of a harem that includes characters from both Naruto and My Hero Academia. The author does a good job of integrating the different power systems and character personalities. There are also some fun interactions between the characters that make it an enjoyable read.
In such a fanfiction, from Naruto, Sakura could be in the harem. She's strong - willed and has her own set of skills. From My Hero Academia, Ochaco Uraraka could be there. She's kind - hearted and has an interesting quirk. And of course, Hinata from Naruto is also a likely candidate with her shy yet determined personality.
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.
Growth is also a key theme. Through experiencing jealousy, Ochako has the opportunity to grow as a person. She learns to better understand her emotions, control her jealousy, and become more confident in herself and her relationships. This is often shown as she overcomes her jealous tendencies and becomes a stronger person both emotionally and in her hero work.
Ochaco Uraraka is a common character in the harem. Her kind and friendly nature makes her a likely candidate. Momo Yaoyorozu is also often included. Her intelligence and elegance add an interesting dynamic to the harem. And Tsuyu Asui could be part of it too, with her unique personality.
One popular trope is the 'Quirkless Hero' where a character without a quirk manages to become a hero through sheer determination and intelligence. Another is 'Villain Redemption', where a villain decides to change their ways. 'Time Travel' is also quite common, with characters going back in time to fix things in the My Hero Academia universe.
One common theme is redemption. Since Enji has made mistakes in the past, many fanfictions focus on him trying to redeem himself in Rei's eyes and in the eyes of their family. For example, he might take steps to be more understanding and less controlling.
One common theme is Izuku's power growth. In many of these fanfictions, he becomes even more powerful and badass in unique ways compared to the original story. Another theme is his relationships, like his friendships or rivalries. For example, his relationship with Bakugo might be explored differently, showing how his badass side affects it.
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.
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.