One common theme is the slow - burn relationship. Since Kanda has a rather cold exterior, many fanfictions explore how the reader gradually breaks through his barriers and they develop feelings for each other over time. Another theme is adventure. Given the nature of the D Gray - Man world, the reader and Kanda often go on dangerous missions together, which builds their bond.
I really like 'The Unspoken Connection'. In this fanfic, the chemistry between Kanda and Allen is palpable. It starts with a simple mission they go on together and gradually builds up their relationship in a very believable way. It's a great read for fans of the pairing.
One common theme is the exploration of Kanda's cold exterior. Fanfics often try to break through that coldness with the reader's character. For example, in many stories, the reader is the one who starts to make Kanda show his softer side.
Sure! You can try looking on Archive of Our Own (AO3). There are a lot of great D Gray - Man Kanda x Reader fanfictions there. Just search for 'D Gray - Man Kanda x Reader' in the search bar and you'll get a bunch of results. Some might focus on adventure scenarios where the reader character goes on missions with Kanda, while others could be more about the development of their relationship in the context of the D Gray - Man universe.
One great place to find Kanda x Allen yaoi fanfiction could be Archive of Our Own (AO3). It has a large collection of fan - created works for D Gray - Man. Just search for the tags related to Kanda, Allen, and yaoi.
There's 'Kanda's Unspoken Bond'. In this fanfic, the author does an amazing job of showing Kanda's complex personality. The way the relationship with the reader develops is slow and full of tension. It really captures the essence of Kanda as a character and how he might interact with someone special.
A great idea could be that Kanda is hurt in a magical experiment gone wrong in the Black Order. It was an attempt to enhance his anti - Akuma weapon, but something backfires. This would not only physically harm him but also make him question his role and place in the Order. He might start to doubt if all their efforts are really worth it.
In some fanfictions, Kanda could be hurt as a result of a betrayal within the Order. A fellow exorcist, who has secretly turned against them, attacks Kanda. This could lead to a lot of internal conflict within the Order as they try to figure out who the traitor is and also take care of the injured Kanda.
The popularity lies in their contrasting personalities. Kanda is cold and stoic while Allen is warm and empathetic. This contrast creates a lot of potential for interesting relationship dynamics in fanfiction.
In D.Gray - Man fanfiction, Allen and Kanda often have a complex relationship. They are comrades in the fight against the Akuma, but their personalities clash. Kanda is hot - tempered and Allen is more gentle and kind - hearted. Their interactions range from bickering to grudging respect for each other's abilities.