There are fanfictions where the Si (self - insert) character changes the plot significantly. They might form different alliances or find new ways to deal with the challenges in the Dxd world. This could lead to really interesting storylines that deviate from the original plot in exciting ways.
Akeno can be a popular character as well. Her mysterious nature and powerful abilities make her an interesting character to interact with the SI. She might be part of the SI's adventures, either as an ally or an unexpected challenge.
One interesting plotline could be the main character using their gaming knowledge to gain unique abilities in the Highschool DxD world. For example, they might apply strategic thinking from games to outwit opponents in battles.
Sure. 'A New Devil in Kuoh' is a great one. It has an interesting take on the self - insert gamer concept in the DxD universe. The protagonist uses their gaming knowledge in a unique way.
Rias Gremory would be a popular choice. She's a strong and important character in the Highschool DxD world. Her leadership and power could be a great contrast or complement to the SI's gamer - like abilities. Another could be Akeno Himejima. Her mysterious nature and powerful attacks could create interesting interactions with the SI. The SI could help her unlock new abilities using their gamer knowledge.
One idea could be the SI (Self - Insert) character using their gamer knowledge to unlock unique powers in the Highschool DxD universe. For example, they might figure out a way to level - up their devil or angel abilities like in a game. Another plot could involve the SI character forming a special team with the existing characters in the series to compete in some sort of supernatural gaming tournament within the DxD world. This could bring in new challenges and alliances.
A Highschool DxD SI Gamer OC fanfiction can stand out by having a really unique SI OC design. For example, if the character has a very distinct backstory related to their gaming experience, like they were a pro - gamer in a previous life and now they have to use those skills in the Highschool DxD world. This makes the character more interesting and different from the regular characters in the series.
The adaptation of gaming mechanics into the Highschool DxD world is also really cool. The SI OC might introduce things like RPG - style leveling systems for the characters in the story. So instead of just the normal power - ups in the original series, characters could gain experience points and level up, unlocking new skills and abilities, which would change the power dynamics and the overall flow of the story.
Finally, start writing. Don't worry too much about making it perfect at first. Just get your ideas down on paper (or on the screen). You can always go back and edit later. Focus on creating an engaging story with your Dxd Gamer Si character at the center, making sure to show their growth and how they interact with the existing Dxd characters.