One common theme is probably the 'opposites attract' idea. Ragna is often portrayed as a more impulsive and action - oriented character, while Kokonoe is intelligent and calculating. Their different personalities coming together can create interesting relationship dynamics.
Another theme could be the struggle against the odds. Given their roles in the BlazBlue universe and any potential obstacles in their relationship, fanfictions might explore how they overcome these difficulties to be together. It adds an element of drama and tension to the story.
One good place to find such fanfiction could be Archive of Our Own (AO3). There are often a variety of fanfictions with different themes and styles there.
One common theme could be friendship turning into something more. Maybe they start as comrades and gradually develop romantic feelings.
Often, you'll see themes of sacrifice and growth. In 'fruits of love fanfiction', characters may sacrifice certain things for the sake of their love, and through that, they grow both individually and as a couple. It's like how a plant has to endure some hardships to bear delicious fruits. Also, the theme of discovery of true love is common. Characters might start with a wrong idea of love and then gradually find the real 'fruits of love' through various experiences.
Another theme is the power dynamics. Usually, the kidnapper has power over the kidnapped. But in the context of a love story, this power dynamic can shift and become more equal as the relationship progresses. This can create a lot of tension and drama in the plot.
One common theme is the forbidden love. Since dragonborns might be from a different species or have a special status, their love with another character is often forbidden in the story settings. For example, a dragonborn falling in love with a human in a world where such relationships are not accepted.
Another theme is the power of love to transform. In many amethyst love fanfictions, her love for someone changes her perspective and makes her a better version of herself. It could be that she becomes more empathetic or more confident. For instance, in 'Amethyst's Redemption in Love', she overcomes her past insecurities because of the love she experiences.
One common theme is the idea of comfort. The hoodie often represents a sense of security and warmth, much like the feeling of being in love. For example, a character might find solace in their love interest's hoodie.
Religious influence is another aspect. In medieval times, the Church had a strong say. So, some fanfictions might deal with the conflict between religious duties and earthly love. For instance, a monk falling in love and struggling with his vows. Or a couple trying to get married but facing religious objections due to some past events or family history.
In many 'in love with a vampire fanfiction', the power dynamic is a theme. Vampires usually have more power physically and sometimes even magically. This can create an interesting dynamic in the relationship, with the human being in a more vulnerable position. Another theme is the exploration of the vampire's past and how it affects their present relationship. For example, a vampire might have a tragic past that makes them hesitant to fall in love again, but the human character helps them overcome that.
One common theme is passion. The color red often represents strong emotions, so in these fanfictions, the love between the characters is usually intense and all - consuming.