Well, obviously Kiba and Sakura themselves are very popular. Kiba with his wild and energetic personality, along with his connection to his dog, makes him an exciting character. Sakura, being smart and strong - willed, also has a lot of fans. People like to explore her relationships and how she uses her intelligence in different situations in the fanfiction world.
One interesting storyline could be Kiba and Sakura teaming up for a school project. They start off not getting along but as they work together, they discover each other's hidden talents and form a strong friendship. For example, Kiba might be good at physical aspects like building models, while Sakura is excellent at research and organization.
Kiba is bold and impulsive, while Sakura is more level - headed and determined. In a marriage, Kiba might bring the spontaneity and Sakura would be the one to keep things in check. For example, Kiba could come up with wild ideas for dates or adventures, and Sakura would either find a practical way to make it happen or talk him out of it if it's too dangerous.
In a fanfiction, their pregnancy might bring about a change in their relationships with other characters. For example, their friends might be very supportive or, on the other hand, some might be jealous. It could also lead to them having to re - evaluate their roles as ninjas and how they will balance parenting with their duties.
A common theme is Kiba's relationships. This can be his romantic relationships, like with a female character from the series. His friendships within the group are also explored a lot. The theme of redemption is also there. Kiba might be trying to atone for something he did in the past. And his role in battles, especially his strategic thinking and combat skills, is another common theme in Highschool DxD Kiba fanfiction.
One great female Kiba fanfiction is 'The New Path of Kiba Yuuto'. It explores a different side of Kiba where she has to face unique challenges in the Highschool DxD world. It delves into her character development in a way that the original series might not have fully explored.
I'm not entirely sure specifically as it depends on the individual fanfiction. It could be about a character named Kiba having an obsessive or following - type behavior towards Sakura within the context of a fictional story based on a particular anime or manga universe.
One characteristic could be that it often explores a non - canonical romantic relationship between Kiba and Sakura. It might also have a lot of emotional and physical tension written into the story. Since it's 'lemon', there could be some more intimate scenes described, but in a tasteful way depending on the writer.
Adventure is another theme. Fanfictions may send Sakura and Kiba on exciting quests together. They could be exploring new lands in the Naruto world, facing unknown challenges, and relying on each other's skills. Their different abilities, like Sakura's medical ninjutsu and Kiba's skills with his dog companions, can be combined in interesting ways during these adventures.
One common theme is friendship. Since Sakura and Kiba start as friends, their relationship often forms the foundation of the family - like bond in the fanfiction. They support each other, just like real friends do in a family.