There may be some dark or alternate universe fanfictions out there with such a plot, but it goes against the general nature of the Naruto series. Naruto is more about friendship and growth, not about killing main characters like Tsunade in a random way.
Yes, there might be such fanfictions out there in the vast world of fan - created content. However, this goes against the general storyline of the Naruto series where they are comrades.
One aspect of this fanfiction could be the exploration of the harsh realities within the Naruto universe. It might show characters being forced to make difficult choices between killing their opponents or being killed themselves. This could lead to a deeper understanding of the moral gray areas that exist in a world full of ninja battles and power struggles.
It could be a random civilian. This would show Naruto the impact of the ninja world's violence on ordinary people, making him more determined to protect the innocent.
It could mean that in some way the official Naruto series or its developments have overshadowed or made fan - created Naruto fanfiction less relevant. For example, if the official storylines in Naruto cover all the interesting plot points that fans used to explore in fanfiction, then it's like the official work has 'killed' the need for some fan - made stories.
No, it's not that common. Most Naruto fans still enjoy and contribute to the fanfiction community. While the official Naruto series is very popular, fanfiction offers unique interpretations and scenarios that the official story may not cover.
It's not that common, really. The main narrative of Naruto is centered around their friendship and rivalry, not one killing the other in a definitive way. Most fanfiction focuses on their growth and development together rather than such a tragic end for Naruto at Sasuke's hands. However, there are a few out there that might explore this for shock value or to create an alternate universe scenario.
One possible reason could be a misunderstanding. Maybe Sakura is under the influence of some dark magic or mind - control in the fanfiction, which makes her lose her rational judgment and attack Naruto. Another reason might be a strong emotional outburst. For example, if she discovers something she believes Naruto has done wrong, but in fact it's a misinformation, and her anger gets the better of her, leading to her almost killing Naruto.
The Akatsuki might take advantage of the situation. With Naruto gone, there's no one to oppose them as strongly. They could start making bolder moves, attacking villages more openly. The other villages might also see Konoha as a threat since one of their own teams killed their most powerful ninja. This could lead to all - out wars between the villages, changing the entire political and power structure of the fanfiction's ninja world.
It depends on the specific fanfiction community's tastes. Some might find the idea of Naruto killing a DxD character exciting because it creates a huge shock value. However, many fans of both series might be against such a concept as they love their respective characters. So, in general, it's not a widespread or highly popular concept, but there could be a small subset of fans who enjoy this kind of dark and unexpected plot twist in their fanfics.