In such fanfiction, Yuuki might be depicted as more alluring and perhaps more assertive in her relationship with Zero. Zero, on the other hand, could be shown as more brooding and possessive. However, this is a very general view and can vary greatly depending on the author's interpretation.
There could be a fanfiction where they are paired up for a school project. In this story, they start off a bit awkward but gradually develop a deeper understanding of each other. As they work on the project, they realize they have more in common than they thought, and it blossoms into a sweet relationship.
You can try fanfiction websites like Archive of Our Own. It has a large collection of fan - created works, and there's a good chance you'll find some Hachiken x Mikage fanfiction there.
One common theme is the clash of personalities. Izaya has his own unique and often devious ways, while the Mikage family has their own values and family dynamics. Another theme is the exploration of family bonds. How Izaya either disrupts or becomes a part of those bonds is often explored.
One popular 'izaya x mikage family fanfic' is 'The Unlikely Bond'. It explores the unique relationship between Izaya and the Mikage family in an interesting way. The story is full of twists and turns that keep you hooked from start to finish.
Kirito is more of a traditional swordsman in terms of his combat style. He often relies on his sword - fighting skills and his ability to quickly analyze his opponents. Yuuki, on the other hand, has a very unique and flashy fighting style. Her movements are more acrobatic.
There could be. Fanfiction writers like to play with different character dynamics. In some fan communities, writers might take the idea of Yuuki being both Kaname's sister and lover and build an entire fictional story around it. But it might not be to everyone's taste.