One common theme is the development of the relationship between Cross Marian and his apprentice. It could be about the growth of trust, or the apprentice learning from Cross Marian's experiences. Another theme is often the exploration of the D Gray - Man universe from their perspective, like dealing with the Akuma and the Black Order.
Well, first of all, you could start by looking on dedicated anime fanfiction communities. These often have sections specifically for D Gray - Man. Sometimes, Reddit can also be a good place to look. There are subreddits related to D Gray - Man where fans might share or recommend good Cross Marian Apprentice fanfictions. Another option is to follow D Gray - Man fan groups on social media platforms like Facebook or Twitter. Fans in these groups might be able to point you in the right direction.
Perhaps a story where Marian Cross is framed for a crime within the Order, and Allen is the only one who believes in his innocence. Allen then sets out to prove Marian's innocence, facing many obstacles and enemies within the Order. This could lead to a lot of action and also some deep emotional moments between them as they face this difficult situation together.
Marian is often seen as a bit of a rogue within the Order. Allen is a dedicated exorcist. A fanfic could show how these different personalities clash when it comes to dealing with the Noah. Marian might be more inclined to use unorthodox methods to deal with them, which Allen might initially oppose. However, as they face more and more dangerous Noah encounters, Allen could come to see the value in Marian's approach, and Marian could start to respect Allen's unwavering dedication. This exploration of their personalities can be a central theme in a story, with their relationship evolving as they learn from each other.
Character development is also a big theme. Since the D Gray - Man world is complex, in the gamer fanfiction, we often see characters evolving as they face different challenges. For instance, Kanda's relationship with others might change as he progresses through his 'game - like' experiences. And teamwork is important too. Characters team up to achieve goals, much like in a multiplayer game.
There are themes like identity. Allen has a unique identity as an exorcist and as someone with a special connection to the Innocence. Fanfictions often explore how this identity affects his decisions and relationships. Additionally, the theme of good versus evil is also common, with Allen being right in the middle of this battle in the D.Gray - Man universe.
One common theme is friendship. Given the complex relationships between the characters in the original, fanfictions often explore and expand on the bonds of friendship among them.
One popular theme is the exploration of Allen's internal struggle. In the fanfiction, it often delves deeper into his complex emotions regarding his past, his role as an Exorcist, and his connection to the Fourteenth. Another theme could be the relationships he forms within the context of Cross. It might show how his interactions with other characters are shaped by Cross's influence. Also, the battle against the Akuma and the Noah in unique scenarios is a common theme, presenting new and exciting storylines that deviate from the original plot but still maintain the essence of the D Gray - Man world.
One common theme is the origin of the Noah and their connection to the Mother. Many fanfictions explore how the Noah came to be and what role the Mother played in their creation. Another theme is power. The Noah Mother is often depicted as a very powerful entity, and fanfictions may explore how this power is passed down to the Noah or how it affects the world around them.
Another theme is the exploration of the complex relationships within the Black Order. In these fanfictions, the reader often has to navigate the different personalities and power dynamics among the exorcists. It can be a really interesting exploration of loyalty, friendship, and sometimes even romance.
Another theme is the relationship between characters. Whether it's the complex relationship between the Exorcists in D Gray - Man or the master - servant dynamic in Black Butler, fanfictions love to play around with these relationships. They might create romantic pairings that are not in the original series or explore the deeper bonds between characters in different situations. For example, a fanfiction could explore what would happen if a character from D Gray - Man had to serve as a butler in the Black Butler world. This would completely change the power dynamics and create a whole new set of interactions.