A fanfiction could also focus on a single character from either DxD or FGO. Let's say a FGO master who is a huge fan of DxD. They might try to incorporate elements from DxD into their servant summoning ritual. They could decorate the summoning circle with symbols related to DxD and chant incantations inspired by DxD magic. This might result in summoning a servant with a unique form or abilities, like a servant with a devil - like appearance or the ability to use DxD - style powers.
In a fanfiction scenario, the DxD Holy Grail could act as a catalyst for summoning rare or powerful servants in FGO. It might contain a power that can break the normal limitations of the FGO summoning system. This could lead to the summoning of servants that are not usually available in the regular FGO universe, such as servants from a parallel dimension related to DxD. The story could then revolve around the master's struggle to control these unusually powerful servants.
One interesting concept could be summoning servants from different time periods and seeing how they interact with the DxD universe. For example, a servant from ancient Greece might have a unique perspective on the devils and angels in DxD. Another concept could be a servant with special powers that are not typically seen in the original series, like a servant who can manipulate time in a different way than what's shown in DxD. Also, the idea of a servant having a secret mission that ties into the overarching plot of DxD could make for an engaging fanfiction.
The summoned servants can change the story in many ways. For instance, if a powerful servant is summoned, they can tip the balance of power in battles. If it's a servant with great wisdom, they might offer advice that changes the course of a character's actions. They could also introduce new elements to the story, like a new type of magic or a different view on the existing power structure in the DxD world.
It might be an abbreviation for a name, like 'David X. Doe' or something similar. Or it could be a unique name within a specific group or community that is into fanfiction. Maybe it's a code name for a person who reviews fanfiction. Without more context, it's really hard to say for sure.
You can try websites like Fanfiction.net. It has a large collection of fan - made stories for various series, including Highschool DxD. Just search for 'Highschool DxD Vali' and you'll get a list of relevant fanfictions.
One popular fanfiction might be those that explore Vali's backstory more in - depth. For example, stories could detail his training and how he became so powerful.
Summoning novels that were similar to summoning the dead could refer to the following works:
1 Summoning the Great Lord
2. Full-time Mage
3 Battle Through the Heavens
4 Douluo Continent
Throne of Darkness
6 Holy Ground
These were all relatively well-known summoning novels, and some of them also contained characters similar to the undead. I hope these recommendations can help.
I recommend "A Comic Girl's Journey to a Different World" and "A Transmigrator Traversing the Comic World" to you. They are both doujinshi derivative novels that fit the characteristics of the anime doujin novels you mentioned. "Comic Girl's Journey to Another World" was about a homebody girl who transmigrated to a 2D world, which also involved the plot of transmigrating to DXD, while "Transmigrator Comic World" was about a transmigrator's adventure in various 2D worlds, which also included the plot of transmigrating to DXD. I hope you like my recommendation, Mwah ~😗
Well, Naruto has a wide range of powerful abilities like his shadow clones, rasengan, and chakra control. In the Highschool DxD universe which is filled with devils, angels, and fallen angels, his powers could be quite unique. His shadow clones could be used for various strategic purposes, like scouting or overwhelming opponents in battles. His rasengan, being a powerful concentrated attack, could be a real threat to the supernatural beings there. And his chakra control might give him an edge in adapting to different situations compared to the more traditional magic - based powers in DxD.