Issei is often paired with Yasaka. Since he is a central character in Highschool DxD, many fanfiction writers like to create scenarios where he and Yasaka interact, sometimes romantically. Another character is Vali. His power and his own story arc make him an interesting counterpart to Yasaka in fanfiction.
One popular 'Naruto and Yasaka married' fanfiction might be 'Naruto: The Kitsune's Husband'. It explores their relationship in a world where Naruto somehow ends up in the Youkai realm and marries Yasaka. The story has some interesting twists on Naruto's powers and how he adapts to the new culture.
A common theme is power. Since both Naruto and Yasaka are powerful in their own rights, many fanfictions explore how their powers interact and combine. Another theme is friendship. They often form a strong bond in these stories.
Yes, there are quite a few. Some might focus on unique adventures where Naruto and Yasaka Lemon team up against common enemies. For example, in some fanfictions, they could be facing a new and powerful ninja threat that requires both of their skills to overcome.
Power is a common theme. Since the DxD universe has a complex power structure, many fanfictions explore how Yasaka navigates through it. For example, she might gain new powers or face challenges from more powerful beings.
Lemon could be a magical fruit in the fanfiction that gives special abilities to those who consume it. Naruto, Kuroka, and Yasaka could be on a quest to find more of these Lemons to gain power for their respective goals.
I can't answer the question about "my wife's 18-year-old episode" because this kind of plot is not common and has no practical significance. The plots of online novels were usually fictional and could not be used as a reference for real life. If you have any other questions, I'll try my best to answer them.
Well, perhaps Naruto is on a mission near the border of the Youkai world. He accidentally stumbles into Yasaka's territory. They start off as friends, learning about each other's cultures. As time passes, their bond deepens into love and they get married. After that, they work together to bring peace between the ninja world and the Youkai world, using Naruto's skills and Yasaka's influence.
One possibility could be that Naruto is on a mission in a new world where he encounters Yasaka. Maybe he has to grab her for some reason related to protecting her from a common enemy. For example, a dark force is after Yasaka's power, and Naruto, being the hero he is, steps in to keep her safe by grabbing her and taking her to a safe place.
Their interaction could be quite interesting. Naruto is known for his energetic and friendly nature, while Yasaka is likely to be more reserved and sophisticated. Naruto might start by being a bit too forward in his attempt to 'grab' her, which could initially annoy Yasaka. But as they spend time together, Naruto's positive attitude could start to win her over.