Perhaps a plotline where Issei, as Satan, discovers some long - hidden secrets about the origin of the devil race. This knowledge could put him at odds with the current devil leadership. He may have to fight against powerful devil lords who want to keep these secrets buried. Meanwhile, his human side might struggle with the more ruthless actions he has to take as Satan in order to protect himself and the new order he wants to create. His relationships with the angels and fallen angels could also be severely tested as they watch his transformation and the power he wields as Satan.
A plotline might involve Issei as Satan trying to reform the devil society. He could use his unique perspective as a former human to change the way devils operate, such as their treatment of the weak or their approach to making contracts. This could lead to a lot of internal conflict within the devil world as traditionalists oppose his new ideas. And his friends from different races like Rias and the others might be caught in the middle, not sure whether to support him fully or try to temper his more radical changes.
Yes, there are likely fanfictions out there with such a concept. In the 'Highschool DxD' universe, there are so many creative interpretations by fans. Some fanfiction writers might explore the idea of Issei taking on a Satan - like role for various reasons, perhaps to add a new twist to the story, explore different power dynamics, or to create unique character relationships.
Perhaps in a fanfiction, Issei's death is part of a grander scheme. There could be an evil force that manipulated events to cause his death, thinking it would lead to chaos. But instead, his death unites the various factions in the Highschool DxD universe. They come together to fight against this common enemy that caused Issei's death, and in the process, discover new powers and alliances.
A plot could revolve around Issei and Irina getting lost in a magical forest. In this forest, there are all kinds of magical creatures. They have to find their way out while also helping some of the creatures they meet. This adventure would bring them closer together as they share many new experiences.
One possible plot could be how the Occult Research Club copes with Issei's death. They might struggle to move forward while also trying to figure out who was behind his death. Maybe they suspect a powerful enemy from the Underworld or a rogue devil. Another idea could be that Issei's death sets off a chain of events that leads to a new power struggle in the supernatural world, as different factions vie for the power he once held or the influence he had over certain areas. And his friends could be visited by his spirit in dreams, guiding them to uncover secrets he didn't have time to reveal before his death.
One interesting plotline could be Issei having to deal with a new, cold power within him. Maybe it's a side - effect of a new ability he's acquired. This cold power might make it difficult for him to interact with his friends in the normal, warm - hearted way he usually does.
One interesting plotline could be Issei and Ophis going on a journey to discover more about Ophis' past powers. Since Ophis is such a powerful being, exploring her origins while in a relationship with Issei can add depth. For example, they might encounter ancient beings who knew Ophis when she was first created.
One interesting plotline could be Issei's struggle to control his new fallen angel powers while still maintaining his relationships with his friends at school. For example, he might accidentally use his powers in public and have to cover it up.
Some fanfictions might explore Issei's relationships in a non - sexualized way. He could form deep, platonic friendships with the female characters. For instance, he and Rias could be just good friends who support each other in their respective goals, like Rias in her duties as a devil leader and Issei in his self - improvement journey.
Yes, there might be. There are a vast number of fanfictions out there for various combinations of popular culture elements. Since Highschool DxD has a large fan base and Godzilla is an iconic figure, it's not unlikely that some creative fans have combined the two in a fanfiction. You can try searching on popular fanfiction websites to find such works.
There could be. Fanfiction writers are known for their wild and creative crossovers. Given the popularity of Highschool DxD and the unique concept of Guyver, it's entirely possible that an Issei - Guyver fanfiction exists. You might want to check popular fanfiction websites like Archive of Our Own or FanFiction.net. Just search for relevant keywords like 'Highschool DxD Issei Guyver' and see if any relevant stories pop up.