Romance is another big theme. Writers usually pair the White Dragon Emperor with different characters from the Highschool DxD series, creating interesting love stories. For example, some fanfictions focus on his relationship with the female characters in the show. It adds a new layer of depth to the character and the story.
Power growth is a common theme. Fans often like to explore how the White Dragon Emperor can become even more powerful and overcome new challenges.
Power - up is a common theme. Writers often explore how the white dragon gains new abilities and becomes stronger in the Highschool DxD setting.
Well, a fanfiction like this often delves into the lore of the White Dragon Emperor more deeply. Maybe it gives a backstory to some of his powers that the original series didn't fully explore. The OC in it could be a catalyst for change in the 'Highschool DxD' world. It could be a character from a different faction who comes to understand the White Dragon Emperor in a new way and helps him grow or face new threats.
Another theme is identity. The OC has to figure out how being a Dragon Emperor fits into their new life in the Highschool DxD world. They might struggle with whether to embrace it fully or keep it a secret. For instance, they may worry about how their friends and foes will react to their true identity.
Power. Since it involves dragon gods, a common theme is the acquisition and control of great power. Characters often struggle with newfound dragon god - like abilities.
A common theme is power. The dragon slayer often has to deal with gaining and controlling their power in the Highschool DxD universe. Another theme is friendship, as they interact with the characters from the original series.
One common theme is power. Since both Dragon Ball and Highschool DxD have characters with different levels of power, fanfictions often explore how these powers interact. Another theme is friendship. Characters from both series form new friendships or rivalries in the crossovers.
The 'Redemption' trope is often seen in 'Highschool DxD White Dragon Emperor OC Fanfiction'. Maybe the OC has a dark past that they are trying to atone for, and their relationship with the White Dragon Emperor helps in that journey. The 'Alliance' trope is also popular, with the OC forming an alliance with the White Dragon Emperor against a common enemy. This can lead to epic battles and strategic planning within the fanfiction. And don't forget the 'Discovery' trope, where the OC discovers something new about the White Dragon Emperor or vice versa, which can change the course of the story.
Power - up is a common theme. Since Issei becomes a Dragon God, the fanfictions often explore his new powers and how he uses them to overcome challenges. Another theme is relationships. His relationships with other characters, like Rias and his friends, might change due to his new status.
Well, 'White Dragon Emperor: Beyond the Known' is also a great one. It takes the White Dragon Emperor on a journey outside the normal boundaries of the Highschool DxD world. The author does a great job of exploring different scenarios and character developments that are not often seen in the original series.
Romance is a huge theme as well. It could be between a Shinto - inspired character and one of the main characters from Highschool DxD. For example, a love story between a kitsune (a common Shinto - related creature in fanfictions) and Issei. The cultural differences between Shinto and the other elements in the story can add an interesting dynamic to the romantic relationships.