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. Allen and Lenalee's friendship is a central part of many fanfictions. Their loyalty to each other and how they support one another through difficult times is often explored.
A common theme is friendship. Their friendship is often explored more deeply, like how they support each other through tough times in the Order.
One common theme is the exploration of their complex relationship. Given their different allegiances in the original story, fanfictions often delve into how they might interact outside of the main plot's conflicts.
Self - discovery is another theme. Allen is a complex character, and in chibi fanfiction, his journey to understand himself better, his powers, and his place in the world can be told in a really engaging way. It could involve him learning about his past or dealing with his inner demons in a more child - like and endearing manner.
One common theme is the exploration of their pasts. Both Allen and Kanda have troubled pasts that can be delved into in fanfiction. Another theme is their growth as characters, especially in relation to each other. For example, how they overcome their differences and become better comrades.
The idea of redemption is also quite common. Since both characters have their own struggles and actions that could be considered morally ambiguous, fanfictions may explore their paths towards redemption or self - discovery. They might face challenges that force them to re - evaluate their beliefs and actions, leading to character growth and development that fans find really interesting.
Isolation is also a theme. Allen is often alone in his struggles, being the host of the 14th Noah. Fanfics may depict his feelings of isolation from both the Exorcist side and the Noah side, and how he copes with being different from everyone else.
One common theme could be the grief and despair of the other characters. For example, Lenalee might be devastated and struggle to come to terms with Allen's death. Another theme could be the power vacuum that his death creates, with different factions vying for control or influence. Also, there might be themes of redemption or sacrifice related to Allen's death, like how his death might be seen as a sacrifice to save others in some fanfictions.
One common theme is his relationship with other exorcists. Writers often explore how he interacts with them, like his friendship with Lenalee or his mentorship under Komui. Another theme is his struggle with his Innocence and the dark side of it. It's also common to see fanfictions about his past, his time at the circus, and how that has shaped him.
In D Gray - Man Allen and Mana fanfic, the theme of protection is quite common. Mana was like a father figure to Allen, and so fanfics often show Allen's determination to protect Mana's memory or things related to Mana. Additionally, the theme of sacrifice is also present. Mana sacrificed a lot for Allen, and in fanfics, this can be explored further, either from Mana's perspective before his sacrifice or from Allen's perspective as he tries to live up to what Mana did for him.