Byleth's back story involves a complex web of family ties and mysterious origins. They were born into a significant role with hidden powers and a destiny yet to be fully revealed.
Friendship is another theme. They start as acquaintances or teacher - student in the game context, and in fanfics, their friendship blossoms. It could be through shared hobbies like reading or gardening, which is often explored in the fanfics.
One great fanfiction could be 'A Bond Beyond War'. It beautifully depicts the relationship between female Byleth and Dimitri as they navigate the challenges of war and politics together. Their interactions are filled with a mix of loyalty, friendship and a budding romance.
One popular theme is the adventure theme. Male Byleth embarking on heroic quests, facing challenges, and growing as a character during these adventures.
One characteristic that is often in 'female byleth fanfic' is her adaptability. She has to deal with various situations in different fanfics, from political intrigue to unexpected magical events, and she always manages to adapt and find a solution. Her compassion is also shown in some fanfics, especially towards those in need or those who are suffering.
Another theme is leadership. Edelgard as an emperor - to - be and Byleth as a teacher - turned - ally often have to lead together. They face the challenges of ruling and guiding their people, like in the fanfic 'Guiding Fódlan'.
The theme of growth is also prevalent. Both characters grow as individuals and as a couple (if it's a romantic story). The female Byleth might grow in her understanding of the world around her, while Dimitri grows in his leadership skills and emotional stability, all while their relationship develops and deepens over the course of the story.
In a fanfiction, Dimitri and Female Byleth could have a story where they are forced to make difficult decisions. Maybe they are at odds with their own kingdoms' politics at some point. Byleth, with her connection to the divine, might guide Dimitri in seeing a different perspective. They could have a love - hate relationship initially, with Dimitri's pride and Byleth's no - nonsense attitude causing friction, but over time, they come to understand each other better and form a strong alliance.
Often, her strong leadership is depicted. In many fanfictions, female Byleth is shown leading her students or allies into battle with confidence. Her kindness towards the students is also a common characteristic. For example, she might comfort a troubled student. Another is her determination. Fanfictions may show her facing difficult challenges and not giving up, like when she has to make tough decisions in the story.