A third theme could be exploration. In a 'fire x sand' fanfiction, the characters could be exploring the boundaries and interactions between fire and sand. This could involve physical exploration of areas where fire and sand meet, such as a desert with volcanic activity. Or it could be an exploration of the metaphorical and magical aspects of these elements. For instance, a character might be on a quest to understand the ancient secrets of how fire and sand were created and what their true purpose is in the world of the story. They might encounter various obstacles and challenges along the way that test their knowledge and skills related to these elements.
One possible theme could be redemption. Peril has a complex character, and through her relationship with Clay, she might find a way to redeem herself in some way. Another theme could be acceptance. Clay may accept Peril for who she is, despite her dangerous side.
Power and its consequences could be a theme. Dragons are typically very powerful in Fire Emblem, and seeing through their eyes might show how that power affects their decisions and relationships.
One possible theme could be friendship. The girls might support each other through various difficulties in the story.
I'm not sure about a specific 'fire x sand fanfiction' to recommend. You could try searching on fanfiction platforms like Archive of Our Own. There might be some creative stories there that combine the concepts of 'fire' and'sand' in unique ways.
One possible plot twist could be that a character who seems to be an enemy at first is actually a long - lost ally. They might have been hiding in the sand - covered areas for some secret reason, and when the truth is revealed, it changes the whole dynamic of the story.
One possible theme could be community spirit. The fire department might be involved in activities that bring the community together during Christmas, like a Christmas parade or a tree - lighting ceremony.
A third theme could be identity. The dragon's unique features, like the dragon eye, might set it apart from other dragons or creatures. The fanfic could delve into how the dragon views itself, whether it is proud of its power or feels burdened by it, and how it defines its own identity in the context of the story.
Power exploration is a common theme. Writers often explore how sand benders can develop new powers or use their existing ones in unique ways. For example, they might show a sand bender learning to combine sand with other elements.
One common theme is loyalty. Given the nature of the gladiator world, loyalty among the gladiators themselves or towards their masters (in some cases) is often explored. For example, in many fanfictions, Spartacus' loyalty to his fellow gladiators is tested in different scenarios.
A common theme is power. Iron sand can be a very powerful ability, so fanfictions often explore how characters gain, control, and use this power. Another theme is identity. Characters with iron sand abilities might struggle with how they are perceived by others because of their unique power.