The theme of mystery also frequently appears. Since the Diabolik Lovers world is full of secrets, the OC often gets involved in uncovering Reiji's secrets or has secrets of their own. This creates an air of mystery and suspense in the fanfiction, as the characters try to figure each other out while also dealing with their growing feelings.
One common theme is the power struggle. Reiji is often portrayed as a dominant figure, and the OC either challenges his authority or succumbs to it in different ways. For example, in some fanfictions, the OC might be rebellious at first but then realizes the depth of Reiji's character and starts to understand his motives.
Love and redemption is another theme. Reiji, with his complex personality, is sometimes shown as being 'redeemed' by the love of the OC. The OC's pure and unconditional love can break through Reiji's cold exterior and bring out a more vulnerable side of him. This theme plays on the idea of love being a powerful force that can change people for the better.
One popular 'Diabolik Lovers Reiji x OC' fanfiction is 'A Bond Beyond Blood'. It delves deep into the relationship between Reiji and the original character, exploring how their personalities clash and mesh. The OC in this story is a strong - willed individual, which makes for an interesting dynamic with Reiji's strict and somewhat controlling nature.
Love and attraction are also prevalent themes. The OC usually forms some sort of romantic or at least a strong emotional connection with one or more of the vampire characters. This can range from a forbidden love story to a more complex relationship where the OC is trying to understand the vampires' true nature while being drawn to them.
One common theme is the power dynamic. Since Kanato is a vampire and often in a position of power, the fanfiction explores how the reader, usually a human, copes with this. Another theme is the idea of redemption. Some fanfictions try to show Kanato's journey towards becoming a better person through his relationship with the reader.
Another theme is redemption. Shu, being a complex character, is often portrayed as someone who might find redemption through his relationship with Yui. It's about how their love could potentially change him for the better. For example, in some fanfictions, he starts to show more compassion towards Yui and others. And also, the theme of sacrifice is quite common. Yui might have to sacrifice her own comfort or safety to be with Shu, and vice versa, as they navigate the dangerous world they live in. This adds a layer of drama and intensity to the stories.
Common themes in Diabolik Lovers Ayato x Yui fanfiction include the struggle for control. Ayato wants to control Yui in many ways, but Yui may resist. Love and hate is also a big theme. Their relationship is so complex that it can swing between love and hate easily. And the theme of self - discovery for Yui. As she is in this strange relationship with Ayato, she discovers more about herself and her own strength.
A frequent theme is the idea of redemption. They both have their flaws, and in many fanfictions, they try to make up for their past mistakes in relation to each other. There's also the theme of forbidden love, as their relationship is complex and not always accepted within the context of the 'diabolik lovers' world.
Love and protection are common themes. Yuma often has a protective streak towards Yui. For example, he might shield her from other characters who mean harm. Another theme could be self - discovery. Yui might discover new aspects of herself through her relationship with Yuma.
One common theme is the power dynamic. Ayato being a vampire has more power than the reader, and this imbalance is often explored. Another theme is love against all odds. Despite the differences between them, they fall in love. And of course, there's the theme of the supernatural world that they live in, with all its rules and mysteries.
Many 'Diabolik Lovers x Reader' fanfictions also focus on the power dynamics. The Diabolik Lovers characters are often powerful vampires, and the reader is usually in a more vulnerable position. How this power imbalance is dealt with in the relationship is a recurring theme. It could be through the reader gradually gaining power, or the characters learning to respect the reader's strength in a different way.
A prevalent theme is the change in relationships. The pregnancy usually causes a shift in how the characters interact with each other. For example, some of the more cold - hearted male characters in 'diabolik lovers' might start to show a softer side. Also, there's the theme of secrecy. Sometimes the pregnancy is kept a secret at first, which adds an element of suspense to the fanfiction.