It's possible that there could be a fanfic with this premise. Fanfic writers often explore very creative and strange ideas. However, without doing a very extensive search in the vast world of fanfiction websites, it's hard to say for certain. There are so many different takes on existing fictional universes in fanfic, and this would be a very interesting and unexpected one.
One possibility is that it could be a moment of great shock for Naruto. He might be initially flustered, his face turning red as he tries to figure out what's going on. Maybe Ophis is seeking comfort or has some ulterior motive in this rather intimate - for Naruto - position. He could stutter and try to ask her what she's doing.
He would probably feel embarrassment. Naruto is a bit of a blusher when it comes to unexpected physical contact, especially from a female. His cheeks would turn red and he would struggle to find words.
One idea could be a story where Naruto is somehow transported to the DxD universe and meets Ophis. He could form an alliance with her, perhaps because they both have a sense of being outsiders in the new world. Naruto's unique skills and his never - give - up attitude could influence the events in the DxD world in interesting ways.
Yes, there are several. You can try searching on fanfic platforms like Fanfiction.net or Archive of Our Own. Some might be really creative and well - written, but it depends on your personal taste in story elements like plot, character development, etc.
Character development is key. You need to show how Naruto would adapt to the DxD world and how he would interact with characters like Ophis. Maybe Naruto starts off being naive about the DxD world's politics but gradually learns. Also, use vivid descriptions. If Naruto is using his Rasengan in the DxD world, describe how it looks different or has different effects due to the different magical environment. And don't forget about pacing. Don't rush the story, but also don't make it drag on.
Well, the most common places are FanFiction.net and AO3. FanFiction.net has a huge community of writers and readers, so there's a good chance you'll find Naruto Ophis fanfic there. AO3, on the other hand, is known for its diverse and inclusive collection of fan works. It allows for more complex tagging and searching options. You can also check out some Naruto fan groups on social media platforms. Sometimes, members of these groups share or recommend good Naruto Ophis fanfics.
One unique aspect could be the new powers Naruto might have. Since Ophis is a powerful being, Naruto as her son could inherit some extraordinary abilities that are different from his original ninja skills in the Naruto series. Another aspect could be the change in his relationships. His status as the son of Ophis might make other characters view him differently.
Love and acceptance is also a very common theme. Given their different natures, the fanfics often explore how they come to love and accept each other for who they are. This can involve Issei accepting Ophis' more otherworldly aspects and Ophis learning to value Issei's human qualities like his compassion and determination.