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.
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.
First, give your OC a unique backstory related to the Red Dragon Emperor power. Maybe they didn't inherit it in the traditional way, or there was some sort of prophecy involved. Second, define their personality traits clearly. Are they more hot - headed like Issei in some ways, or are they calmer and more calculating? Third, think about their goals. It could be something as simple as becoming the strongest in the school or something more complex like uniting all the different supernatural races. And don't forget to give them some flaws, like being overly confident at times which can get them into trouble.
One popular storyline could be the OC's struggle to control the power of the Red Dragon Emperor. For example, they might face challenges in taming the intense and sometimes uncontrollable power within them. Another could be their relationships with the existing characters from Highschool DxD. They might form alliances or rivalries with Rias and her peerage. Also, a story could revolve around the OC uncovering secrets related to the Red Dragon Emperor heritage that were previously unknown, leading to new adventures and battles.
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.
One of the most exciting aspects of Highschool DxD OC Dragon God fanfiction is the creation of unique characters. Writers can design their own original characters (OCs) with dragon god powers, which adds a whole new layer of intrigue to the story. For example, an OC dragon god could have the power to manipulate time, leading to some really cool plot twists.
A good plot idea could be that the OC Dragon God has to hide their true identity in the high school. They are there to find a certain magical item that is hidden in the school. As they search, they get involved with the main characters and have to deal with the normal high school drama as well as the supernatural threats that come their way.
An OC (Original Character) in a Highschool DxD fanfiction having the Rinnegan could be an extremely powerful and unique addition. The Rinnegan, from the Naruto universe, brings a whole set of abilities like the Six Paths powers. In the context of Highschool DxD, this OC could use these powers in various ways. For example, the ability to see chakra could be translated into seeing the magical energy in the DxD world. They could use the gravitational powers of the Rinnegan to manipulate the environment during battles against devils, angels, or fallen angels. It would make for a very interesting and overpowered character in the Highschool DxD fanfiction setting.
Well, some storylines involve the OC dragon having a special bond with one of the main characters from Highschool DxD. This bond could be based on a shared goal, like finding a powerful artifact that is important to both the dragon and the character. It could also be a more emotional bond, like the OC dragon helping a character through a difficult time. There are also storylines where the OC dragon is an outcast from their own dragon clan and has to prove themselves in the world of Highschool DxD.
Well, for creating an OC (Original Character) as a Dragon God in a Highschool DxD fanfiction, first think about their powers. A Dragon God could have the power of elemental manipulation, like controlling fire or ice. Their appearance could be a mix of human and dragon features. Maybe they have dragon wings that can be hidden at will. Another important aspect is their backstory. They could be an ancient being that has just awakened in the modern Highschool DxD world.