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.
In a possible plot, there could be a prophecy in the Youkai world about a human who will marry Yasaka and bring great change. Naruto fits the description. At first, Yasaka is skeptical but as she gets to know Naruto, she falls for him. Their marriage causes a stir in both worlds. Naruto has to deal with his old friends in the ninja world who are confused about his new life, while also helping Yasaka lead the Youkai in a new direction. There could be battles against Youkai who oppose the marriage and Naruto has to use his newfound knowledge of Youkai abilities along with his ninja techniques to overcome these challenges.
The plot might involve a quest. Naruto is known for his adventurous spirit. He could be on a quest for a powerful artifact or a special kind of chakra. Along the way, he meets Yasaka. Yasaka, with her own knowledge and abilities, could help Naruto in his quest. In return, Naruto could offer his skills in combat to protect Yasaka from those who oppose her in her own land. This could lead to a deep friendship or more between them as they face various challenges together.
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.
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.
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.
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.
It could be a story that combines elements of Naruto's world with new and unique aspects related to Yasaka. For example, Yasaka might have a special power that Naruto has to help him control. Along the way, they face enemies together. Naruto uses his experience as a ninja, and Yasaka uses his own unique abilities. The story might also explore Naruto's growth as a father, how he balances his duties as a father with his ninja duties.
One possible plot could be that Natsu and Yasaka meet by chance in a magical realm. They initially clash due to their different personalities but gradually start to understand each other. As they go on adventures together, they fall in love and decide to get married, facing various challenges from their respective worlds along the way.
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.
It could also be due to the overall tone and plot of the fanfiction. If the fanfiction has a dark or negative theme and Yasaka is a part of that in a way that makes Naruto seem to 'hate' her, it might be because the writer wants to create some sort of conflict. However, this may not align with the original essence of Naruto's character, who usually tries to understand and befriend rather than hate without a good reason.
A possible plot could be them having to protect their family from an unknown threat. Since both are powerful shinobi, they would use their skills to safeguard their loved ones. They might also face internal struggles, like Naruto's loyalty to Konoha conflicting with Yugito's ties to her own village.