The theme of sacrifice also pops up. Since Reshiram is often associated with noble values, there could be scenarios where either the human or the female Reshiram has to sacrifice something for the other. It could be sacrificing personal goals, or in more extreme cases, even their own existence to save the other. This adds a lot of drama and depth to the fanfictions.
One common theme is friendship. The human and Reshiram often start as strangers but gradually become friends, relying on each other in various situations. Another theme is adventure. They usually embark on some sort of journey, whether it's to save a region or to discover something new about the Pokémon world.
A common theme could be the exploration of femininity within a powerful and mythical Pokémon like Reshiram. Another might be relationships, like with a trainer or other Pokémon.
One common theme is adventure. Ash and Reshiram might go on a journey together to discover new Pokémon or solve some mystery in the Pokémon world.
A common theme is the power struggle. Given their different natures and powerful abilities, many fanfictions explore how kyurem and reshiram deal with the balance of power between them. Another theme is friendship or alliance. Despite their differences, they often come together in fanfictions, either out of necessity or a growing understanding of each other.
A common theme is friendship that evolves into something more. The human and female Lucario start off as comrades in some adventure or task within the Pokémon world, and over time, their bond deepens romantically.
Well, friendship is a very common theme. The human and the female autobot start as strangers but gradually become friends. Also, the idea of discovery is prevalent. The human discovers the world of the autobots through the female autobot, and the autobot discovers human emotions and values. Additionally, there are stories where they fight together against a common foe, which shows the theme of cooperation.
One common theme is survival. The human character often has to find ways to survive in the presence of the female predator. Another theme is understanding. They try to understand each other's motives and behaviors.
A common theme is cultural exchange. Since Sangheili and humans have very different cultures, exploring how they learn from each other can be interesting. For example, a human might learn about the Sangheili's honor - based system, and a female Sangheili could learn about human emotions.
A theme that might often show up is the idea of protection. The human might feel the need to protect the female charizard from harm, or vice versa. Also, there could be a theme of discovery. As they interact, they discover new things about each other, like the charizard's unique abilities and the human's hidden strengths. This type of fanfiction can also explore the concept of communication between a human and a Pokémon, which is not always easy in the Pokémon universe.
Love is a very common theme. Despite their differences, the female werewolf and the human often fall in love, which forms the central part of the story. Another theme is the struggle for acceptance. They have to deal with the fact that their relationship is not the norm in either of their worlds.