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.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, and there's a good chance you'll find some great anzai and tsukasa fanfics there.
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.
One popular trope could be the 'forbidden love' aspect. Since they might have some obstacles in the original story, this can be explored in fanfiction.
You can try looking on some fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. However, make sure to follow the rules and guidelines of those platforms.
There's also a fanfic called 'Tsukasa and Anzai: The Bond'. This one focuses on how their bond deepens over time. It includes some really heart - warming scenes where they support each other through difficult times. It's a great read for fans of their relationship.
I'm not sure which specific 'anzai x taira fanfic' you are referring to. There could be various fanfics out there. You might want to check some popular fanfic platforms like Archive of Our Own. They usually have a wide range of fanfics and you can search for 'anzai x taira' to see if there are any interesting ones.
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.