The exploration of the High School DxD lore is also a common theme. Writers often expand on the existing lore, like the different ranks of devils, the history of the three factions (devils, angels, and fallen angels), and how magic works. They might introduce new elements to the lore that fit well with the original world - building, which makes the fanfiction more interesting for readers who are already familiar with the original series.
One common theme is power growth. Many fanfictions focus on the main character getting stronger in the High School DxD universe, whether it's through new powers or better control of existing ones.
Another theme is relationships. This can include romantic relationships between the self - inserted character and the original characters like Rias or Akeno. It also involves friendships and rivalries that develop as the story progresses. In a lot of these fanfictions, the relationships are complex and add depth to the overall story. For example, some explore how the self - inserted character navigates the different social hierarchies in the school, which is full of devils, angels, and other supernatural beings.
One common theme is the exploration of relationships. Given the nature of the original series, many fanfictions focus on the romantic or friendship relationships between Uri and other characters.
One common theme is Asia's growth. Since she starts as a rather timid character in the original, fanfictions often focus on her becoming stronger. Another theme is her relationships, like her friendship with the main characters.
One common theme is power growth. In both Naruto and DxD, the characters are constantly striving to become stronger. Fanfictions often combine these two elements, showing how characters from one series adapt to the power - up systems of the other. For example, Naruto characters might learn about the Sacred Gears in DxD.
One common theme is the clash of different worlds. Spiderman's world of superheroics and the supernatural world of High School Dxd collide. Another could be friendship, as Spiderman might form new bonds with the characters in the High School Dxd universe.
Power - up is a very common theme. The self - insert gamer often uses their gaming knowledge to quickly gain power in the DxD world.
One common theme is power. Since the OC is a god, there's often a focus on their extraordinary powers and how they use them in the high school setting of DxD.
One common theme is power. Since both Naruto and High School DxD have complex power systems, fanfictions often explore how the characters' powers interact. Another is friendship, as in how Naruto's idea of friendship might influence the relationships in High School DxD. And of course, there's the theme of adventure, with Naruto getting involved in the wild adventures that usually happen in High School DxD.
Friendship is also a big theme. Characters from both series might form new friendships or strengthen existing ones. They could support each other in battles or in dealing with the challenges of living in a new and different world. For instance, the Sailor Scouts could befriend some of the students in the High School DxD world and help them out in times of need.
Power struggle is also a frequent theme. Naruto is a powerful ninja, and in the High School DxD world, power is highly coveted. His powers might attract the wrong kind of attention, and those who want to gain or maintain power could betray him to eliminate a potential rival.
Adventure is sometimes a theme. Even during a honeymoon, the story might take Issei and his partner on some exciting adventures, whether it's exploring a new magical place or facing some challenges together, which adds an extra layer of excitement to the fanfiction.