The relationship between the last human and the environment is often explored. The world has changed, and they have to adapt to it. There could be themes of the last human's connection to nature or how they interact with the remnants of human civilization. And sometimes, there's a theme of discovery, like the last human finding something unexpected that gives them a new hope or changes their perspective on the situation.
Survival is a very common theme. Since the main character is the last human, they have to find ways to stay alive in a world that is either empty or full of danger. For example, in many of these fanfics, Harry has to figure out how to get food and shelter without the support of the wizarding community as it once was.
One common theme is identity. Kurama has to figure out how his demon self and his human self coexist. Another theme is friendship. Since he's in the human world, he forms relationships with humans which often play a big role in the stories.
A common theme is friendship. The human and Cynder often start as strangers but develop a deep bond through shared experiences. For instance, they might fight together against a common enemy. Another theme is discovery. The human may discover new aspects of Cynder's world or powers, and Cynder might discover the unique qualities of humans.
Adventure is also a common theme. Whether it's exploring ancient ruins together or facing a common enemy, the pandaren and human characters in fanfiction usually embark on exciting adventures. These adventures test their skills and the strength of their relationship, and they often emerge victorious through their combined efforts and mutual understanding.
Another common theme is adventure. Bumblebee, being an Autobot, is often involved in battles and missions. When a human gets involved, they go on these exciting adventures together, exploring new places and facing dangerous enemies. It makes for a thrilling read as the duo overcomes obstacles. In some fanfictions, they might even travel to different planets together.
One common theme is friendship. It could be about a human and Krystal forming an unlikely but strong friendship. For example, they might start off as strangers and gradually come to understand and support each other through various adventures.
One common theme is identity. When a human turns into an asari, they have to figure out who they are now. Another theme is adaptation. They need to adapt to the asari's physical abilities, like their biotic powers. And there's also the theme of acceptance, both self - acceptance and acceptance by the asari society.
Love is a very common theme. The idea of a demon and a human falling in love, despite their differences, is often explored. Another common theme is conflict. There is usually some sort of conflict between the demon world and the human world.
One possible theme could be friendship. The story might show how a human and a hippo form an unlikely bond. For example, a human might rescue a hippo calf and then they grow up together in a unique way.
Another theme is cooperation. Sometimes, they realize that by working together, they can achieve greater things. In some stories, they join forces to fight against a common enemy like an ancient evil or a powerful dragon. This theme shows how they can overcome their differences and use each other's strengths. It often involves a lot of character development as they learn to trust one another.