Well, it would be really interesting. Naruto has his own set of values like perseverance and friendship. If he were Issei's father, he might instill those values in Issei. Maybe Issei would grow up with a different kind of power, not just the Sacred Gear from his original story but also some ninja techniques from Naruto. And Naruto would probably be very protective of Issei, teaching him how to fight and face challenges in a more ninja - like way.
I'm not sure if there is a specific 'Naruto father of Issei' fanfic. Fanfics can be quite diverse and spread across various platforms. You could try searching on major fanfic websites like FanFiction.net or Archive of Our Own. Maybe use the search terms 'Naruto' 'Issei' and 'father relationship' to see if any relevant ones pop up.
In some fanfictions, it's possible for Naruto to be Issei's father. Fanfiction often takes creative liberties and can create some really out - there family relationships. However, in the original Naruto and High School DxD (where Issei is from) canons, there's no such connection.
Issei might inherit Naruto's chakra. This would give him the ability to perform ninja techniques like the Shadow Clone Jutsu. He could create multiple clones of himself to confuse enemies or help with tasks. Also, he could potentially inherit Naruto's ability to sense negative emotions, which would be useful in detecting threats.
To avoid Issei bashing in Naruto fanfic, first, try to understand the character of Issei. Research his origin, his powers, and his personality traits. This way, you can write him in a more accurate and respectful way.
One possible story could be a crossover where the worlds of Naruto and High School DxD collide. Naruto, perhaps through some magic or time - travel - like event, ends up in the DxD world and has a relationship that results in Issei's birth. Another could be a story where Naruto has some sort of hidden connection to the devils in DxD and his bloodline gets mixed, leading to Issei. There could also be a story where Naruto is reincarnated in the DxD world and starts a new family, with Issei being his son in that new life.
Well, it could start with Naruto being a bit clueless about fatherhood at first. He might try to teach Issei some of his ninja skills, like how to throw a kunai or use chakra. As time goes on, they could bond over protecting their home from threats. Naruto's never - give - up attitude would also influence Issei, making him more determined in his own pursuits.
Naruto could use his explosive - natured jutsus like the Rasengan. If he was sparring with Kiba, a misdirected Rasengan could hit something explosive nearby and cause an explosion involving Kiba. For Issei, if they were in a battle together, Naruto's chakra - infused attacks might react with Issei's energy - based powers in an unexpected way and create an explosion.
The combination of two different universes like Naruto and the world of Issei makes it interesting. The idea of a female Naruto in a harem setting with Issei brings a unique twist. It allows for new character dynamics and relationships to be explored.
Another way to depict the fear is through their internal thoughts. The author could write in the first - person perspective for each character at times. Naruto might think about how the explosions remind him of the destruction he saw during the Pain invasion and how he doesn't want to see that kind of destruction again. Kiba could be thinking about how his ninja skills might not be enough to protect himself and his dog from the explosions. Issei might be having flashbacks to a past experience where he was nearly killed by an explosion and how that fear has now resurfaced.