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.
I'm not entirely sure about the specific move list of Kokonoe in Central Fiction off the top of my head. You might want to check the official game guide or some dedicated gaming forums where fans discuss and document character move sets in detail.
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.
One common theme is the idea of forbidden love. Since Chucky is a killer, being in love with him is something that society would not accept. Another theme could be redemption through love. As I mentioned before, a character might try to save Chucky from his murderous ways through love.
Often, the theme of forbidden love appears in scarecrow love fanfiction. Since the scarecrow is not a typical love interest in the normal sense, the relationship can be seen as something that goes against the norm. There is also the theme of redemption. The scarecrow, which might be seen as a simple or even spooky object at first, can find a new purpose and a form of redemption through the power of love. This can be really interesting as it gives the scarecrow a deeper, more emotional backstory.
Often, there's the theme of secrecy and danger. The relationship has to be hidden because of the killer's identity. And there's the allure of the forbidden. Loving a killer is not something society approves of, so that adds an element of excitement and tension to the story. In addition, the power dynamics between the two characters can be an interesting theme. The killer may have a certain power or control, and the other character may be trying to navigate that while also loving them.