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.
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.
In Highschool DxD fanfiction, characters might watch various things. For example, they could watch magical battles between different factions. Since the world of Highschool DxD is filled with devils, angels, and other supernatural beings, these battles can be quite spectacular. They may also watch training sessions of powerful fighters, learning new techniques and strategies. Another possibility is that they watch cultural events specific to their different species, like a devil's ball or an angel's ceremony, which can help them understand the traditions and values of each group.
The Highschool DxD manga has indeed finished. It wrapped up after completing all the planned story arcs and providing a satisfying conclusion for the readers.
You can try looking on fanfiction websites like FanFiction.net or Archive of Our Own. These platforms usually have a large collection of fanfictions, including those related to Highschool DxD. Just use the search function and type in 'Highschool DxD Kuroka pregnant' to see if there are any relevant stories.
Yes, there could be such fanfictions out there. Fanfiction writers often like to cross over different popular franchises, and combining Naruto and Highschool DxD in this way is not unheard of. It allows for some really interesting character interactions and plot developments.