It's hard to say without actually reading a lot of them. But it could be themes like friendship, if they are characters that can form an interesting bond. Maybe adventure if their story takes place in a world full of action.
Since I don't have much information on what exactly 'chrom orange' refers to in the context of fanfic, it could be a very niche piece of fan - made literature. It might be that Chrom is a new or relatively unknown character in a particular fandom, and the writer of the fanfic has decided to incorporate the color orange as a symbol, or it could be related to an orange - colored object that is important to Chrom's story in the fanfic. For example, if Chrom is a hero, the orange could be the color of his magic sword or his shield.
Well, I haven't read any 'chrom x orange fanfic' myself. But if you join relevant fan communities, like on Reddit or Discord dedicated to the source material where chrom and orange come from, people there might be able to point you to some great ones. They often share and discuss fanfics within the community.
I haven't heard of any specifically popular 'chrom orange fanfic' stories. It might be a very specific or new concept that hasn't gained widespread popularity yet.
One characteristic is the exploration of their deep friendship. In many chrom x robin fanfics, their bond is shown as something that goes beyond just being comrades. For example, they often rely on each other's judgment in battle and in diplomatic matters. Another characteristic is the focus on their complementary personalities. Chrom is often depicted as brave and noble, while Robin is intelligent and strategic, and fanfics play with how these traits interact.
A fanfic like this could be really interesting. Maybe it delves into the backstories of both Fe Chrom and the villager maiden. It might show how their paths cross and how they interact with each other. It could also add new elements to the existing lore of the Fe universe, like perhaps a new magical ability that the maiden has that helps Chrom in battle.
The fact that they are both important characters in their own right. In a 'Robin x Chrom' fanfic, you can explore how their individual storylines intersect. For example, Robin's mysterious past and Chrom's quest for peace can be intertwined in many creative ways. Also, the potential for romantic and platonic relationships between them is vast. Fanfic writers can play with different scenarios, like them facing a great enemy together or dealing with political intrigue within their kingdoms, all while their relationship is evolving.
One great 'Robin x Chrom' fanfic is 'A Bond Beyond Battle'. It beautifully explores their relationship development. Another one could be 'Destiny's Threads' which has an interesting plot where they face challenges together.
Well, if we assume a non - inappropriate take on it. Fanfics about Chrom and Robin might focus on their relationship dynamics. They could explore their friendship, loyalty, and how they support each other in the story's context. Maybe there are elements of their shared adventures and how they grow closer through those experiences.
Love and sacrifice are common themes. Given their story in the game, their relationship can be explored in terms of how far they would go for each other.