Well, Archive of Our Own (AO3) also has a good collection of issei x gasper fanfiction. You can search for tags like 'issei x gasper' and explore the various stories available. Some might focus on their friendship, while others could explore a more romantic side of their relationship.
Another common theme is adventure. They often embark on various quests or face challenges together in the fanfic. For example, they might be fighting against common enemies in the supernatural realm. This not only tests their abilities but also strengthens their bond.
One great fanfic could be 'Issei and Gasper's Unlikely Bond'. It delves into how their friendship develops in a unique way, with some exciting adventures in the Highschool DxD universe. They face challenges together and support each other, which is really heart - warming.
There are many 'issei x gasper fanfic' out there. Some focus on their adventures together in the supernatural world. For example, 'Adventures with Issei and Gasper' which has them facing various challenges side by side, and it's really exciting to read how their friendship grows through these experiences.
The unique dynamic between Issei and Gasper. Issei is often this bold and outgoing character, while Gasper is more shy and reserved. When they interact in fanfics, it creates an interesting contrast. For example, Issei might drag Gasper into some wild adventures, which is fun to read.
Rias is another common character paired with Gasper. Since Rias is the leader of the peerage that Gasper is a part of, fanfiction might explore their relationship in terms of leadership and following. For example, how Rias helps Gasper to overcome his fears and grow as a member of the group.
When exploring fanfics, keep in mind the quality of writing. Look for ones with good grammar and engaging storylines. Some fanfics might focus on a particular aspect of their relationship, like how they support each other during difficult times in the Highschool DxD world, while others could be more light - hearted and focus on their daily interactions.
Fanfiction could also develop Gasper by exploring his relationships in more detail. His friendships, his crushes, or his mentorships. For example, if he has a mentor figure who teaches him how to better control his powers, we can see how that relationship evolves over time and how it impacts Gasper's growth as a character. We can also see how his friendships are tested in tough situations, and how he responds, which would show his loyalty and the values he holds dear.
One great Issei x Katase fanfiction is 'A Different Path'. It shows an interesting alternate universe where their relationship develops in a unique way. It focuses on their interactions and how they support each other through different challenges in the Highschool DxD world.