The theme of forbidden love often appears. Their being on opposite sides in the battle between the Exorcists and the Noah makes their relationship a forbidden one. This can lead to themes of secrecy and the consequences of their relationship being discovered. There's also the theme of power dynamics, as they each possess different powers and abilities, and how these play into their interactions and relationship.
They might also have a sort of mentor - mentee relationship. Allen, with his strong moral compass, could try to guide Road towards a more positive path. But Road, being stubborn, might resist at first but then slowly start to change because of Allen's influence.
The fanfic might explore a romantic relationship between Allen and Road. In this story, they could start off as enemies but gradually discover their feelings for each other through various interactions and shared experiences. For example, they might be forced to work together on a mission that makes them see the good in each other.
Tyki Mikk is a great supporting character in this context. As a Noah like Road, he can bring in the Noah's perspective. His interactions with Road can give insights into the Noah clan and how they view Road's relationship with Allen. Then there's Komui Lee, Lenalee's brother. His over - protective nature towards Lenalee and his role in the Black Order can be affected by Allen's relationship with Road, making him an important character to the story.
Love is a very common theme. It could be a slow - burning love or a love at first sight between the reader and Allen. Another common theme is adventure, as Allen is often involved in dangerous and exciting situations, and the reader gets to be part of those. Also, friendship is a theme, as the relationship might start as friends and then develop into something more.
One common theme is the struggle between duty and love. They both have important roles in the Black Order, so many fanfictions explore how they balance their responsibilities with their growing feelings for each other.
One common theme is the exploration of their shared destiny. Since both characters have complex fates in the original story, fanfictions often play around with how their paths are intertwined.
Well, a common trope is the 'slow - burn romance'. Given Allen's reserved nature, it would take time for a relationship with the reader to develop. It could start with simple acts of kindness and gradually build into something deeper. Also, the 'mysterious past' trope can play a role. Allen's own mysterious past can add an extra layer of intrigue to the relationship as the reader tries to understand him more and more.
One popular theme is the struggle of male exorcists against the powerful demons. They often have to overcome their own fears and doubts while facing the overwhelming evil. Another theme could be the brotherhood among male exorcists. They support and rely on each other in the dangerous battles. Also, the theme of self - discovery is common. Male exorcists like Allen Walker may discover their hidden powers or the true purpose of their existence during their adventures.
One common theme is the crossover of their powers. Allen's anti - Akuma weapon and Soul's scythe - like weapon often get combined or compared in unique ways. For example, in some fanfictions, they might have to train together to master new combined abilities.
A lot of 'allen x road fanfic' focuses on the power dynamic between them. Given Allen's abilities and Road's unique powers as well. There's also the theme of trust - building. Since they come from different sides, they have to learn to trust each other in these fics. And of course, love or at least a deep connection is a common theme, whether it's romantic or a very strong platonic bond.