One of the common themes is the exploration of different factions. In 'human dxd fanfiction', you can find stories that focus on the internal politics and power struggles within the various groups. Also, self - discovery is quite common, as characters figure out their true potential and purpose.
Power growth is a very common theme. Writers often explore how the characters can become stronger in different ways compared to the original story. Another common theme is relationship development, like the romantic relationships between characters.
One common theme is self - discovery. The human OCs often find themselves in a new and strange world of devils and other creatures, and they have to figure out who they are in this context. For example, they might discover hidden powers or a new purpose in life.
One common theme could be power dynamics. Since it's a Rias - bashing fanfiction, it might explore how a human OC challenges Rias' authority or power within the Highschool DxD universe. Another theme could be the exploration of different character relationships. The human OC may interact with other characters in ways that contrast with how Rias does, leading to new and interesting story developments. It could also deal with the concept of loyalty, as the OC might sway the loyalty of characters who were previously on Rias' side.
Many fanfictions focus on Issei's role within the devil society. How he rises in rank, earns respect, and changes the way things are done. There are also themes related to loyalty and friendship. His relationships with his friends and comrades are often explored, showing how they support each other in the face of various challenges in the dangerous world of 'High School DxD'.
A common theme is the clash of technology and magic. The terminator's mechanical and technological nature often stands in contrast to the magic - based world of DxD.
One common theme is power - up. Characters from both Naruto and DxD often gain new powers or abilities when combined in fanfiction. Another theme is the exploration of different cultures. Since Naruto has its ninja culture and DxD has its own demon and angel - related cultures, fanfictions often explore how these cultures interact.
One common theme is power - leveling. Just like in regular gamer stories, the characters in dxd gamer fanfiction often strive to increase their stats and abilities through various in - game - like mechanics. For example, they might defeat powerful enemies to gain experience points.
One common theme is power. Godzilla is extremely powerful, and in the DxD universe which also has powerful characters, exploring how his power compares and interacts is a big theme.
Another theme is the exploration of the afterlife. Given that reapers are associated with death and the afterlife, fanfictions often explore how the DxD world's view of life and death is affected by the presence of a reaper. They might show how the reaper's knowledge of the afterlife changes the perspective of the DxD characters.
A common theme is the clash of different power systems. Since Odin comes from Norse mythology and DxD has its own complex power structure, seeing how they interact is often explored. Another theme is the idea of prophecy. How Odin's knowledge of the future might play a role in the DxD world's events.
Another theme is the clash of cultures. Naruto comes from a ninja - based culture, and DxD has a very different supernatural culture. Fanfictions often explore how Naruto reacts to the different social norms, values, and power structures in DxD. It can be really interesting to see how he tries to find his place in this new world.