Love and acceptance is also a prevalent theme. The relationship between the female dragon and male human may face many challenges, not just from the difference in species but also from the reactions of others in their respective worlds. Overcoming these obstacles to find love and acceptance is a common plot point in such fanfictions.
Common themes include transformation. The male human may be changed by his relationship with the female dragon, either in his personality or his physical abilities. The female dragon might also experience a form of transformation, perhaps in her view of humans. Love against all odds is also a big theme. They are from different species, and there may be many obstacles in their way, but they still fall in love. And the theme of mutual understanding is key. They need to understand each other's needs, wants and limitations in order to make their relationship work.
One common theme is the idea of acceptance. The male human has to accept the dragon anthro's different nature, like her powers and appearance. For example, in many stories, the human is initially afraid but then learns to embrace her dragon - like qualities.
The female dragon can be a source of magic. For instance, she can use her magic to protect the male human. Maybe she can create a magical shield around him during battles. The dragon's lair could also be filled with magical items. The male human could discover a magic sword or a potion there. Magic can also be used in their relationship. The dragon could use magic to communicate with the human telepathically.
Love and companionship are also very common themes. Despite their differences, the female dragon and the human often fall in love. Their relationship is unique because it crosses species boundaries. This love can be a source of strength for both characters, allowing them to face external threats together and grow as individuals within the relationship.
The theme of transformation can also be common. Sometimes the human might gain some dragon - like abilities or the dragon might take on more human qualities as they interact. Another theme is the struggle against society's norms. Since their relationship is not typical, they often have to fight against the expectations and prejudices of their respective species' communities. This adds a layer of drama and conflict to the fanfics.
One common theme is the idea of overcoming differences. Since humans and dragons are very different species, there's often a focus on how they bridge the gap between their cultures, languages, and ways of life. For example, in many stories, the human has to learn to understand the dragon's instincts and vice versa.
There is 'A Human's Dragon Adventure'. It's about a male human who is on a quest and meets a female dragon anthro. She has unique powers and they team up. As the story progresses, they learn about each other's cultures and the human starts to see the dragon anthro in a whole new light, and they end up on a journey of self - discovery.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of various fanfictions, including those with this kind of pairing. Just use the search function and type in relevant keywords like 'female dragon male human' to find stories.