There could be. Fanfic writers often come up with various pairings, and 'naruto x yasaka' is not an uncommon type of crossover idea. However, it may not be as mainstream as some other pairings in the Naruto fandom. To find it, you might also want to check Naruto - specific fanfic communities where fans share and discuss their works.
Yes, there are some out there. You can start by checking fanfiction websites like Archive of Our Own or FanFiction.net. Just search for 'naruto x yasaka' on their platforms and you might find some interesting stories written by fans.
One common theme is adventure. Since both Naruto and Yasaka are from different and interesting worlds, fanfictions often send them on exciting adventures. Another could be friendship, as they get to know each other.
One challenge could be cultural differences. Naruto is from the ninja world with its own set of values and traditions, while Yasaka is from the youkai world. Another might be the acceptance of their relationship by their respective communities. The ninja might be suspicious of a youkai, and the youkai might not fully trust a human like Naruto at first.
The main characters are Naruto and Yasaka. Naruto, with his determination and ability to grow stronger, is a key character. He has his own set of values and a strong will to protect his friends and village. Yasaka, on the other hand, is a respected and powerful leader in the DxD universe. Her intelligence and her ability to command the Youkai Faction make her an important figure. In this fanfic, they would be the ones driving the story forward, through their encounters, exchanges of power, and the development of their relationship.
Well, it could be a story full of adventure. Naruto's ninja skills combined with Yasaka's unique abilities might lead to exciting battles against common enemies. Maybe they team up to save a world or a particular place.
One possible plot could be that Naruto somehow gets transported to the DxD universe and meets Yasaka. They initially have a misunderstanding as Naruto's chakra and power seem strange to the beings in DxD. But as they get to know each other, they team up to face a common enemy that threatens both the ninja world Naruto comes from and the DxD world. They combine their unique abilities, Naruto's Rasengan with Yasaka's fox - like powers, to defeat the enemy and in the process, they become good friends and learn a great deal about each other's worlds.
In fanfiction, Naruto could be portrayed in various ways. He might be a character with new relationships and roles. Without reading the specific 'naruto father of yasaka fanfiction', it's hard to say exactly. But generally, he could be a father figure to Yasaka, which would likely involve a lot of character development and new storylines related to protecting, guiding, or having a special bond with Yasaka.
I'm not aware of any such fanfic. Fanfics should abide by ethical and moral standards, and this description involves inappropriate and unethical behavior. Naruto is a popular anime character, and most fanfics focus on positive storylines like friendship, adventure, and character growth.
One possible plot could be Naruto being somehow transported to the world of Highschool DxD. He could use his ninja skills and chakra in the battles against the devils and fallen angels in that world. Maybe he teams up with Issei and his group, and Naruto's unique jutsus like Rasengan and Shadow Clone Jutsu surprise everyone.