Yes, there are quite a few. You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Zero Kiryu x Kaname Kuran' and you'll find a variety of stories with different themes and plotlines.
One common theme is the exploration of their underlying feelings. Despite their apparent hatred in the original work, fanfictions often reveal hidden affection. Another theme is redemption, where they help each other overcome their personal demons.
The theme of redemption can also be seen. Zero, with his inner struggle against his vampire side, might find redemption or acceptance through his interactions with Kaname. And Kaname, who has his own secrets and burdens, could also experience a form of redemption in relation to Zero. In many fanfictions, their relationship is a vehicle for exploring these deeper character arcs.
Another option is to join some Vampire Knight - themed Facebook groups. Members often discuss and share fan - made content, including fanfictions. However, make sure to follow the group rules when looking for and sharing these works.
In a Zero Kiryu x Rido Kuran fanfic regarding unlikely encounters, the initial reaction between them would be very interesting. Zero, with his hatred for vampires (despite being one), would likely be hostile towards Rido. Rido, seeing Zero as an inferior at first, might underestimate him. However, as they interact more, they could find that they have more in common than they thought, like their determination in achieving their goals, which could lead to a change in their relationship dynamic.
For the human OC, give her a distinct personality. For example, if she's shy, show how she reacts differently to Kaname's charm and Zero's intensity. Kaname is complex. Highlight his noble vampire side as well as his more manipulative tendencies. Show how he interacts with the OC, perhaps being overly polite at first. Zero is brooding. Emphasize his internal struggle between his vampire side and his hunter duties. Let the OC see this struggle and react to it.
One interesting aspect of a Zero Kiryu x Rido Kuran fanfic could be the character development. Zero might start off as completely opposed to Rido, but as the story progresses, he could come to understand some of Rido's motives, not necessarily agreeing with them, but seeing the deeper reasons behind his actions. Rido, on the other hand, could see in Zero a worthy adversary or even a potential tool for his own plans. This could lead to a complex web of relationships and plot twists in the fanfic.
The human OC could be a relative of an important figure in the vampire - hunter world. Kaname wants to use her to gain an advantage in the power struggle, while Zero wants to protect her from being used. The OC, in the meantime, is trying to figure out her own place in this strange world. She might start to develop feelings for both Kaname and Zero. As the story unfolds, she discovers secrets about her family that tie her even closer to the conflict. Kaname and Zero then have to decide whether their feelings for the OC are more important than their long - standing enmity.
One great 'kaname kuran x oc fanfiction' is 'A Forbidden Love'. It really delves into the complex relationship between Kaname and the original character. The author does an amazing job of creating a believable backstory for the OC that ties in well with the Vampire Knight universe. Another one is 'My Heart's Desire' which focuses on the emotional journey of the OC as she falls in love with Kaname. It has some really beautiful, heart - wrenching scenes.
The exploration of the vampire lifestyle is also quite common. The fanfiction might describe how the reader adjusts to Kaname's vampire nature, like dealing with his nocturnal habits or his need for blood. Additionally, themes of loyalty and trust are prevalent. As the relationship between Kaname and the reader develops, they have to learn to trust each other, especially considering the different worlds they come from.