A third plot twist could be the appearance of an old enemy from either of their worlds. For instance, if one of Naruto's old foes teams up with an enemy from Esdeath's world. They would then have to put aside their differences and work together to defeat the common enemy, which could either strengthen or strain their marriage.
One possible plot twist could be that they face opposition from the Hidden Leaf Village. Since same - sex relationships might not be as openly accepted in the traditional ninja world. Another twist could be that they have to go on a dangerous mission together right after getting married, which tests their new relationship. And perhaps there's a secret enemy who wants to break them apart because their union represents a new kind of hope in the village.
Well, perhaps a plot twist could be that Naruto gets cursed. This curse makes him forget all about Ino and their relationship. Ino then has to go on a journey to find a way to break the curse. Along the way, she might face many challenges and meet new characters who either help or hinder her. Or maybe there's a twist where it's revealed that Ino was arranged to be married to someone else in her family long ago, and she has to fight against the family traditions to be with Naruto.
One possible plot twist could be that Naruto has to face a powerful enemy right before the wedding. This enemy might be someone from his past who wants to disrupt his happiness. Another could be that Hana discovers a long - lost relative who has some secrets about her family that could change their relationship. Or perhaps there's a mix - up with the wedding arrangements, like the wrong venue being booked, which leads to a series of comical and heartwarming events as they try to fix it.
A plot twist could be that Ayame is actually part of a prophecy related to Naruto. For example, their marriage is foretold to bring either great prosperity or great disaster to the Hidden Leaf Village. This makes their relationship more than just a love story and puts a lot of pressure on them, as they have to figure out how to fulfill the prophecy in a positive way.
One possible plot twist could be that their marriage causes a rift in the ninja world. Some might oppose it due to Itachi's past actions. Another could be that they discover a new power that comes with their union, which is crucial in saving the world from a new threat. And perhaps they have to deal with family issues, like Naruto trying to make Itachi feel welcome in Konoha despite his past.
One possible plot twist could be that right before the wedding, Naruto has to go on a dangerous mission. This could put their relationship to the test as Sakura has to deal with the fear of losing him. She might even consider calling off the wedding. Another plot twist could be that an old enemy resurfaces and tries to use Sakura as a leverage against Naruto, forcing him to make a difficult choice between his love and the safety of the village.
One possible plot twist could be that Naruto discovers a long - lost family secret that has an impact on his marriage to Kurenai. Maybe it's a prophecy that his family was supposed to stay away from certain clans, and Kurenai's clan is one of them. This would create a lot of internal conflict for Naruto as he loves Kurenai but also feels a sense of duty to his family's legacy.
One possible plot twist could be that their marriage unites two very different worlds. Naruto's world of ninjas and Ophis's more supernatural world might collide in unexpected ways. For example, Naruto's friends might be initially distrustful of Ophis and her powers. Another plot twist could be that an old enemy of either Naruto or Ophis sees their union as a threat and tries to break them apart. Maybe a powerful ninja from Naruto's past who doesn't like the idea of him being involved with someone from another realm. Also, there could be a plot twist where the marriage ceremony itself has some sort of magical or ninja - related mishap that changes their relationship in a new and unforeseen way.
A plot twist could be that Naruto and Mikoto are forced into a political marriage. They initially don't get along but as they face various challenges together, they start to fall in love. For example, they might have to deal with other ninja villages trying to undermine their union. Also, there could be a twist where Mikoto loses her memories and Naruto has to make her fall in love with him all over again while also preparing for the wedding.
A really interesting plot twist could be that female Naruto is actually from an alternate dimension where she and Kakashi are already married. In this new world, things are different, and she has to figure out how to make their relationship work in this dimension too. Plus, there could be a character who is jealous of their union and tries to break them apart by spreading false rumors about Kakashi's past, which female Naruto has to deal with.