Yes, there might be such fanfictions out there. Fanfiction writers often create crossovers where they put characters from different universes like Naruto and High School DxD together and come up with various scenarios, including ones where Naruto could potentially 'kill' a character from the DxD universe. However, the quality and nature of these fanfictions can vary greatly.
It's hard to say for sure without knowing the specific novel. Sometimes, it could even be a group of characters or a symbolic entity that represents the eyes of God, influencing the plot and characters' destinies.
It allows for character development. A character with Mystic Eyes in a fanfiction might have to struggle with controlling or understanding their power. This internal conflict can make the character more relatable and complex, like how in the original Highschool DxD, characters grow through their various challenges.
Yes, there might be. The 'fanfiction' world is vast and diverse. There are often crossovers that combine different popular franchises in unexpected ways. However, the quality and nature of such a fanfiction can vary greatly. Some might be really creative, while others could be a bit of a mess.
In some Highschool DxD and Naruto crossover fanfictions, Naruto might be depicted as a god - like figure. This could be due to his extremely powerful abilities in the Naruto universe, such as his vast chakra reserves, multiple jutsu, and his status as a hero in his own world. Writers may take these aspects and amplify them in the Highschool DxD setting, where the power levels and the concept of beings with god - like powers already exist. So, it's possible for Naruto to be seen as a god in such fanfictions.
I'm not sure exactly as I haven't read this novel specifically. But typically, there might be a protagonist who is on a spiritual journey. This character could be someone who is constantly grappling with the concept of the 'eyes of God' and trying to live up to some sort of moral or spiritual standard.
Well, it could be about redemption. In the eyes of God, characters may strive to atone for their sins or mistakes. Also, the theme of faith might be prominent. The novel might show how the characters' faith is tested or strengthened in relation to their understanding of God's view. And perhaps the theme of human nature as well, exploring how humans behave when they think there is a divine entity observing them.