The themes usually revolve around their relationship. One is the theme of protection. Kaname is always very protective of Yuki, and this is often explored in fanfics. Another is the theme of discovery. Yuki discovers more about herself and her feelings for Kaname as the story progresses. And there's also the theme of forbidden love. Since their relationship is complex due to their different species, this adds an element of the forbidden which is a common theme in many fanfics.
Love is a very common theme. The deep, often complicated love between Kaname and Yuki is explored in various ways. Another theme is power. Since they are in a vampire world, how they use or struggle with their powers in relation to their relationship is often written about.
The theme of sacrifice is also prevalent. Kaname or the OC may have to sacrifice something, like their own desires or safety, for the sake of their relationship. Also, power dynamics play a role. Kaname is a powerful vampire, and how the OC deals with that power in their relationship is often explored.
One of the most popular themes is the power of their love. Their love is often depicted as strong enough to overcome the differences between vampires and humans. For example, in many fanfictions, they face opposition from vampire society but their love endures. Another theme is redemption. Kaname, with his complex past, is often shown on a path of redemption through his love for Yuki. It gives his character more depth.
In Vampire Knight Yuki x Kaname fanfiction, a prevalent trope is the transformation trope. Yuki's transformation from a human to a vampire and how that affects her relationship with Kaname is often explored. Additionally, the 'redemption' trope can be seen, where Kaname might be portrayed as a character in need of redemption for his past actions, and Yuki is the one who can bring about that change. These tropes help to create engaging and unique stories within the fanfiction realm.
One great fanfiction is 'A New Beginning for Kaname and Yuki'. It delves deep into their relationship post - the main events of the series. It shows how they navigate their new life together, with beautiful descriptions of their emotions and interactions. Another one is 'Kaname and Yuki: Eternal Love'. This one focuses on the eternal aspect of their love, with some creative twists on their vampire - human relationship. It's really engaging to read.
A common theme is the struggle between love and duty. Kaname often has his duties as a vampire noble, and Yuki has her own responsibilities, whether it's to the Day Class students or to the vampire - human coexistence. Their love has to navigate through these obligations.
One popular Vampire Knight Kaname x Yuki fanfic is 'A Bond Beyond Time'. It beautifully explores their relationship, delving deep into their complex emotions. The story takes place in an alternate universe where they face new challenges together. Another great one is 'Love in the Dark'. It focuses on the more secretive and passionate side of their relationship. It's full of intense moments and tender exchanges between Kaname and Yuki.
One great fanfiction could be where Yuki and Kaname go on a journey to find the origin of their vampire lineage. It could explore their relationship deeper as they face various challenges together.
One common theme is the struggle between their different identities. Kaname being a pureblood vampire and Zero being a vampire hunter, their identities are at odds, and many fanfictions explore how they overcome this. For example, in some stories, they realize that they are more alike than different in their desires for a better world for vampires and humans alike.
Love is a very common theme. Most fanfictions focus on the deep love between Kaname and Yuki, exploring different aspects of it like unrequited love or forbidden love.