Another reason might be that they faced some sort of writer's block. Coming up with new plot ideas, especially for a crossover as complex as Naruto and Devil May Cry, can be really challenging. They might have hit a point where they didn't know how to progress the story further. Or perhaps they received some negative feedback early on that discouraged them from continuing.
Cai Jun's " Abandoned Village "," Return from the Abandoned Village ", and " Abandoned Village Apartment " were not directly related to each other. It could be said that they were independent novel series.
" The Abandoned Village " was a horror novel published by Cai Jun in 2007. It was about the adventures of a young man who was abandoned on a deserted island and a mysterious event.
" Return from the Abandoned Village " was a continuation of " The Abandoned Village ", which was published in 2008. It continued the story of the protagonist on a deserted island.
Apartment in the Abandoned Village was the second part of the trilogy, published in 2011. It told the story of the protagonist returning to the city after leaving the deserted island.
Although there is no direct connection between these three novels, readers can regard them as a whole and see them as one of Cai Jun's representative horror novels.
I'm not entirely sure specifically what 'dxd adult fanfic' is. 'DxD' might refer to a particular series (such as 'High School DxD'), and 'fanfic' stands for fan fiction. However, the 'adult' part implies it could be fan - created stories with mature or inappropriate content which is not suitable to discuss in detail.
The number of DxD novels can be a bit tricky to pin down. Different regions might have different releases and editions. Your best bet is to do a comprehensive search on popular book databases or consult with avid fans of the series.
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.
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