Maybe Mavis, in her exploration of different realms, ends up in the ninja world. She gets into trouble and Naruto comes to her rescue. Naruto is intrigued by her magic and Mavis is impressed by his ninja skills. This encounter plants the seed for their relationship that eventually leads to marriage.
Naruto has shown incredible feats of strength, speed, and endurance. He has defeated some of the most powerful villains in his universe. But Mavis is no slouch either. Her Fairy Law is a very powerful spell. If we consider their growth potential, Naruto has the ability to constantly get stronger by unlocking new forms of his power, like Sage Mode and later the forms related to the tailed beasts. Mavis, on the other hand, has a deep knowledge of magic that could potentially allow her to counter any of Naruto's attacks. It really depends on the situation, the location, and how well they know each other's abilities.
One of the main characters could be Wayne, the werewolf. He and his family could bring some fun and chaos to the story. Maybe they come to visit Johnny and Mavis, and the werewolf pups accidentally cause some trouble in the baby - proofing of the house. Also, Griffin, the invisible man, could be there. He could use his invisibility to play pranks on the couple during their pregnancy, but also be a good friend when they need help.
Their relationship would likely become more centered around the baby. They would have less time for just themselves and more time taking care of the baby's needs.
The curse of the Luo family in " Praying for the Morning " referred to the fate of the twins of the Luo family. In order to revitalize the Luo family, the last generation of Quan Guardian Luo chose the Blood Binding method to bind himself to the Hot Sea Spring so that he could not drift according to the Heavenly Rails. This blood binding spell caused the curse of the Luo family twins. Every ten years or so, the Luo family would welcome a pair of twins. One of the twins would die prematurely, and Luo Maiming's soul would use the dead fetus to be reborn and absorb the life force of the other fetus to help it grow. This meant that the twins were born for the sake of Luo Maiming's survival. One provided a physical body and died young, while the other provided nutrients and lived a short life. This curse doomed the twins of the Luo family to a short life.
" Curse of the Mountains " was a novel written by an anonymous author. It told the story of the growth and adventures of the main character, Ji Xiao and Hu Ruan. In the story, Ji Xiao and Hu Ruan were chosen to protect an ancient and mysterious relic and embarked on a journey full of fantasy and adventure. He would face the pursuit of evil forces and his inner struggle, and at the same time, he would discover his hidden strength and mission. This novel was full of magic and thrills, bringing the readers a world full of surprises and emotions.
Fairy was not a curse. In Chinese, the term fairy was usually used to describe a woman with noble moral character, extraordinary wisdom, pure and untainted, elegant and refined, as well as a god with extraordinary abilities and high status. It was often used to describe beautiful, dignified, and refined women. Although in some cases, some people might use the word fairy as a way of teasing or mocking, under normal circumstances, fairy was not derogatory or offensive. Therefore, it could be said that fairy was not a curse.
One idea could be that in the fanfiction, Mavis discovers she's pregnant unexpectedly. Her friends and family are in shock at first but then rally around to support her. Maybe the father of the baby is a mysterious character, adding an element of intrigue to the story.
I'm not entirely sure if there is a specific well - known fanfiction with Naruto as Mavis' father. There are so many fanfictions out there, and it could be a very niche or new concept. However, given the creativity of fanfiction writers, it's not impossible that someone has written a story with this premise. Maybe it involves some kind of magical or time - traveling plot device to make such an unlikely connection between the two characters from different universes.