A plot twist might be that their dating is part of a prophecy. In the ninja world, prophecies are common in fanfictions. They could find out that their relationship is destined to either save the village or destroy it. This would put a huge strain on their relationship as they have to decide whether to follow their hearts or try to avoid the prophecy. And on top of that, there could be a misunderstanding where Naruto is framed for something bad, and Tenten has to decide whether to believe him or not.
In the fanfiction, a plot twist could be that there is a hidden rule in the Chunin Exams that only Naruto and Tenten figure out. This rule could be something like a special task that, if completed, would give them an automatic pass to the next round. They have to work together secretly to achieve this task, all while avoiding suspicion from the other competitors and the examiners.
Well, a plot twist might be that Naruto discovers Anko has a hidden power that she's been suppressing. This power could be related to a rare bloodline or a forbidden jutsu. As they start dating, Naruto notices strange occurrences around Anko and eventually uncovers this secret. This could create a rift between them as Naruto might be worried about the implications of such a power, while Anko is afraid of being rejected because of it. Also, there could be a plot twist where the Akatsuki targets Anko because of her relationship with Naruto. They might see her as a way to get to Naruto and try to kidnap or manipulate her.
A plot twist could be that Naruto discovers a secret about Tsunade that she has been hiding all along. It could be something related to her family or a power she has been suppressing. This discovery could either strengthen their relationship or create a rift between them. Also, there could be a twist where an outside force tries to use their relationship to gain power in the ninja world. They might try to manipulate Naruto or Tsunade to their advantage.
One possible plot twist could be that their respective villages oppose their relationship at first. Since Naruto is from Konoha and Temari is from Suna, the political situation between the villages might make their relationship difficult. For example, there could be old treaties or grudges that get in the way. Another plot twist could be the interference of a third party who has feelings for either Naruto or Temari. This person could try to create misunderstandings between them to break them up. Also, a plot twist might be that Naruto has to go on a long and dangerous mission right when their relationship is starting to develop, leaving Temari worried and uncertain about their future together.
One possible plot twist could be that Neji has to go on a dangerous mission right before the wedding. It would put their relationship to the test as Tenten would be worried sick about him. Another twist could be that there's a misunderstanding within their families regarding some old traditions that might affect the marriage. For example, an old family feud resurfaces that threatens to stop the wedding. And a third plot twist could be that Neji loses his memory due to a jutsu gone wrong just days before the wedding, and Tenten has to make him fall in love with her all over again.
One possible plot twist could be that they initially thought the pregnancy was normal but then discover it's a very special and rare kind of pregnancy in their ninja world. Maybe it has some connection to a long - lost jutsu or a prophecy.
One possible plot twist could be that Aphrodite's powers of love start to have unexpected effects on Percy. For example, instead of making him fall for her in the typical way, it makes him see love in a completely different light, like seeing the love between friends more intensely. This could lead to a conflict as Aphrodite expected a more romantic outcome. Another twist could be that the other gods get jealous of their relationship. Since Aphrodite is the goddess of love, her dating Percy might make other gods feel left out or threatened. This could cause them to try and break the two apart, creating all sorts of challenges for Percy and Aphrodite.
In a Naruto - Tenten marriage fanfiction, the plot could revolve around a post - war scenario. Naruto is now a hero and is looking for a more stable and meaningful relationship. Tenten, on the other hand, has always been a bit in the background but has a strong and independent spirit. Naruto notices this and is drawn to her. They start going on missions together, and during one particularly dangerous mission, they realize their feelings for each other are deeper than friendship. This realization leads to their marriage, which is not only a union of two individuals but also a symbol of hope and new beginnings for the shinobi world.
One possible plot could be that Naruto, after realizing Tenten's unique skills and her strong will, gradually falls in love with her. They might start off as friends, training together. As they spend more time, Naruto discovers a side of Tenten that he hadn't noticed before. Their relationship could develop through various missions they go on together, facing challenges side by side and relying on each other. Eventually, Naruto decides to propose to Tenten, and they get married in a grand ceremony attended by all their friends from the Hidden Leaf Village.
Well, in this fanfiction, Naruto might save Tenten from a powerful enemy. Maybe she's captured during a mission and Naruto uses his shadow clones and Rasengan to rescue her.