Romance, of course, is a huge theme. Writers love to write about their tender moments, like secret dates, heartfelt confessions, and stolen kisses. These romantic elements are what many readers are looking for in an Issei x Akeno fanfiction. Also, there can be themes related to power dynamics. Issei might gain more power and how that affects his relationship with the powerful Akeno can be an interesting exploration in some fanfictions.
One common theme is the development of their relationship. Since they often start with a certain dynamic in the original source, fanfictions like to explore how that relationship deepens and changes over time.
One common theme is romance. Given the idea of Issei kissing Akeno, the fanfictions often explore their relationship in a romantic context, with all the typical romantic elements like love confessions, dates, and relationship development.
Another theme is adventure. Since Highschool DxD has a lot of action and supernatural elements, fanfictions might have Issei and Akeno going on adventures together, facing powerful enemies and overcoming challenges as a team. They could be fighting against other devils, angels or fallen angels in these stories. And often, these adventures also contribute to the growth of their relationship.
A common theme is friendship. The stories often explore how Akeno and the OC become friends and support each other. Another theme is self - discovery. The OC might be on a journey to find themselves and Akeno helps in that process.
A major element is the way their relationship affects the people around them. Their friends and allies may have different reactions to their relationship, which can create sub - plots. Moreover, the cultural and social context within their fictional world also shapes their relationship. Their different backgrounds within that world can lead to both challenges and opportunities for their relationship to grow.
One common theme is the clash of their cultures. Naruto comes from a world of ninjas with strict codes and values, while Akeno has her own background. Another is the idea of them being outcasts in some ways and finding solace in each other.
Often, a common theme is the clash and then the melding of their two different cultures. Naruto's world has the ninja villages, honor, and chakra, while Akeno's world has the devils, angels, and different power hierarchies. In the context of a 'lemon' fanfiction, there may also be themes of passion and desire that are more emphasized due to the nature of the 'lemon' genre, which often includes more romantic or sexual undertones.
In fanfiction, an Issei - Akeno kiss could signify a deepening of their connection. It could be a way for the author to explore the characters' feelings on a more intimate level. It might also be a plot device to create drama, like if there are other characters who have feelings for either Issei or Akeno and this kiss causes jealousy or conflict.
One common theme could be the clash or harmony of different powers. Since Issei might have his own set of powers and Amaterasu is a significant figure in mythology with her own powers, their interaction in terms of power dynamics can be a theme. For example, how they combine their powers to face a common enemy.
One common theme is the exploration of their relationship. Since they come from different backgrounds in the anime universe, fanfictions often delve into how they get to know each other better and form a connection.
Friendship is a common theme. They might show how Issei and Gasper support each other through different challenges in their fictional world.