Another possibility is a friendship. Issei is known for his friendly and somewhat pervy nature. He could break through Ophis' cold exterior and they could become friends. They might go on adventures together in the fanfiction world, with Issei showing Ophis the fun side of the human world and Ophis protecting Issei when he gets into trouble.
There could also be a more complex relationship where Ophis sees Issei as a key to some greater plan. Maybe she has a prophecy or a goal that she believes Issei can help her achieve. So she forms a bond with him, not just out of friendship or mentorship, but because he is a crucial part of her long - term scheme. She might manipulate events around Issei to steer him towards that goal while also developing a certain affection for him over time.
In fanfiction, Ophis and Issei could have a mentor - mentee relationship. Ophis is extremely powerful, and she might take Issei under her wing to help him grow stronger. This could involve her teaching him about his powers and how to better control his devil abilities.
One great Issei and Ophis fanfiction could be where they team up to face a new powerful enemy. In this type of story, their unique abilities combine in interesting ways. For example, Issei's boosted gear and Ophis's dragon powers could create some really cool fight scenes. It might also explore their relationship further, perhaps showing how they grow to trust each other more on a deeper level.
Often, their relationship is depicted as a somewhat unlikely pairing at first. Issei is a perverted but kind - hearted guy, while Ophis is a very powerful and somewhat aloof dragon. So, it starts with a lot of misunderstandings, like Ophis not understanding Issei's human quirks.
The appeal of Issei and Ophis fanfiction lies in their unique personalities. Issei is a determined and often humorous character, while Ophis is this mysterious and extremely powerful dragon. When they interact in fanfiction, it creates an interesting dynamic. Their relationship can be explored in many ways, whether it's a friendship, a mentorship, or something more romantic.
Their relationship could develop uniquely if Issei starts to teach Ophis about human emotions more deeply. Since Ophis is a powerful being, she may not fully understand all the nuances of love. Issei could show her through simple acts like sharing his favorite food or taking her to a place that has special meaning to him.
For Issei, in fanfiction, he could be developed by giving him new powers. For example, he could gain some of Ophis' power in a special encounter. This would not only make him stronger but also force him to learn how to control and use it, which could lead to a more mature Issei. His relationships could also be developed further. With Ophis, he could start to understand her better and become more than just an acquaintance.
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 plot idea could be Issei and Ophis going on a journey through different dimensions to find a way to strengthen their bond. Maybe they encounter various mythical creatures and have to overcome challenges together. Another could be a situation where they are forced to hide their relationship from the other characters in the Highschool DxD world, adding a bit of secrecy and drama.
One possible plot could be that Naruto somehow gets transported to the Highschool DxD world. He meets Ophis and initially they are at odds because of their different natures. But as they interact more, they start to understand each other. Naruto's determination and Ophis' power could lead to them teaming up against common enemies in the Highschool DxD universe, and their relationship could develop from there into a romantic one.
It could involve exploring Issei's character development earlier than in the original. Maybe showing his growth in power or relationships in a more rushed way. For example, he might gain his powers more quickly and start interacting with the devils and other supernatural beings in a premature manner, leading to different story arcs and interactions compared to the official plot.
A simple plot could be that they compete in a school - wide tournament. Koneko's pride as a Nekoshou and Issei's determination to prove himself make for an interesting dynamic. They both face tough opponents and along the way, they offer each other advice and support, gradually becoming closer friends.