There could be a plot twist where Aphrodite is actually being controlled by an evil force to get close to Naruto. Naruto has to figure out the truth and save her while also dealing with his feelings for her. Or, a twist could be that Naruto discovers that Aphrodite has a hidden side that is very different from what he initially thought, and he has to decide if he still wants to marry her.
One plot twist might be that Aphrodite loses her powers when she falls in love with Naruto. This would change their relationship dynamic as she has to rely on Naruto in ways she never expected. Also, there could be a twist where a prophecy in Naruto's world predicts that his union with Aphrodite will either save or destroy both their worlds, and they have to figure out which it will be.
Well, consider this. In a fanfiction about James Potter marrying Narcissa, a major plot twist could be that they are both reincarnations of ancient wizards who were lovers in a past life. Their union in this life is fated to either save or destroy the wizarding world. Another twist could be that Narcissa is actually a double agent, secretly working for the Order of the Phoenix, and her marriage to James is a way to get insider information on the Death Eaters. And yet another could be that a dark magic curse is placed on their marriage, causing strange and dangerous things to happen around them, and they have to work together to break the curse and in the process, fall in love for real.
Another plot twist could be that Naruto's own chakra has an unexpected effect on the vampire. Perhaps it changes the vampire in some way, either making them more powerful or causing some sort of internal struggle within them. This would then have a big impact on their relationship as they both have to figure out how to deal with this new situation.
A plot twist could also be that Temari discovers a long - lost relative who has a dark past and tries to use Naruto's influence for evil purposes. Temari would be torn between family loyalty and her love for Naruto, and Naruto would have to help her make the right decision while also protecting their relationship and the villages.
A plot twist could be that Naruto and Sakura get married in an alternate universe where things are different from the original Naruto storyline. Maybe in this universe, Sasuke never left the village, and Naruto and Sakura developed feelings for each other over time while working on missions together. Their marriage could then be a symbol of a new era of peace and cooperation in the village. However, they soon discover that there are dark forces at work trying to undermine their relationship and the stability of the village.
One interesting plot twist could be that Naruto initially thought he was only in love with Hinata, but during a dangerous mission where Hanabi's life was on the line, he realized he had deeper feelings for her as well. Another could be that there is a prophecy that foretells of a union between the Uzumaki, Hinata, and Hanabi which would bring great power and peace to the ninja world, forcing the characters to consider this unconventional relationship.
In such a fanfiction, it would likely involve a blend of Percy's heroic nature and Aphrodite's allure. Percy, known for his courage and loyalty, might be initially resistant to Aphrodite's advances. But as the story unfolds, Aphrodite could show a different side of herself, not just the goddess of love but also a complex character with her own insecurities. Their courtship could be filled with misunderstandings due to their different natures. And the marriage itself could be a grand event that shakes up the world of gods and demigods alike, with political implications among the divine beings and new responsibilities for Percy.
One possible plot could be that Naruto discovers a way to travel back in time and decides to save his mother, Kushina. As he gets to know her better during this time - saving her from threats and sharing his future knowledge with her - their relationship deepens into love, and they end up getting married. It could also involve Naruto having to deal with the consequences of changing the past in terms of how it affects the future he came from.
One possible plot could be that Naruto, with his strong will and unique powers, enters the world where Rias exists. Their meeting might be accidental, perhaps during some sort of interdimensional rift. Naruto's sense of justice and Rias's leadership in her own group could lead to them having mutual respect. As they get to know each other more, they find that they share common goals in protecting the weak and maintaining balance. Eventually, they fall in love and decide to get married. Their union could bring about a new era of cooperation between the two different fictional worlds, with Naruto teaching some of his ninja techniques to Rias's group and Rias sharing her knowledge of magic with Naruto's friends.
Well, one possibility could be that Naruto somehow enters the world where Koneko exists. Maybe there's a strange jutsu gone wrong that transports him. They meet, and Naruto's kind and determined nature attracts Koneko. Eventually, they fall in love and get married. Naruto might introduce Koneko to his friends in Konoha, and she could share her unique skills with them.
One major challenge Percy would face is the difference in their natures. Percy is a hero, a do - er, always in the middle of action and fighting for justice. Aphrodite is more about beauty, love, and the subtleties of emotions. Their different outlooks on life could lead to many misunderstandings. Also, the fact that he is mortal - born and she is an immortal goddess would create a lot of tension. There would be questions about their future together, like whether Percy could ever truly be on an equal footing with her in the long run, and how their relationship would affect the balance between mortals and gods.