There could be a fanfiction where the mouths on Naruto's hands are a gift from a mysterious sage. These mouths have the ability to tell the truth about a person just by tasting their chakra. This leads to some really interesting plotlines as Naruto uses this new power to expose traitors within the Leaf Village and also to understand his enemies better during battles.
One possible fanfiction could be about Naruto using the mouths on his hands for a unique jutsu. Maybe he can use them to perform a super - powerful suction technique to draw in opponents or objects. Another idea could be that the mouths have the ability to speak different languages, helping Naruto in his diplomatic missions across different ninja villages.
One plot idea could be that Naruto discovers he can use these hand - mouths to communicate secretly. For example, in a mission where silence is crucial, he could use the hand - mouths to convey messages to his teammates without making a sound. Another idea is that these mouths have unique abilities, like being able to sense chakra more acutely. So Naruto has to learn how to control and use this new sense in battles.
I'm not sure of a specific one, but it could be that in a fanfiction, the mouths on his hands are used to communicate with ancient spirits. Naruto might be the only one who can do this because of some special connection, and it helps him gain new powers and knowledge to protect the village.
One could be a story where a character, perhaps Sasuke, has his hands blood - stained from a battle that makes him question his path. It might explore his internal struggle and how he copes with the guilt.
One interesting fanfiction could be where Anakin gets his body back through some ancient Sith or Jedi ritual. Maybe a hidden Jedi Master discovers a way to reverse the damage caused by his transformation into Darth Vader.
It could change his relationship with his enemies too. Enemies might be more hesitant to attack him, not knowing what the mouths on his hands can do. Some might be so freaked out that they avoid him altogether. His relationships with his sensei, like Jiraiya, would be interesting. Jiraiya would likely be excited to study this new phenomenon and help Naruto figure out how to use it to his advantage. And Naruto's new 'hand - mouths' could also bring him closer to some characters who are interested in the strange and unusual in the ninja world.
One interesting fanfiction could be where Naruto slashes his headband as a sign of breaking free from the traditional shinobi ways that have restricted him. Maybe he decides to form his own path, independent of the Hidden Leaf Village's old rules.
One interesting fanfiction could be where Mulan marries someone from a different kingdom. In this story, it might explore the cultural differences they face while building their relationship. Maybe she marries a prince from a neighboring land, and they have to deal with political tensions as well as their own personal feelings.
I'm not sure if there are many 'Dora gets pregnant' fanfictions on Wattpad. However, such a topic can be quite controversial as Dora is a children's character. Fanfiction usually explores different relationships and storylines, but this one seems a bit out of the ordinary and might not be in line with the original character's intended audience.
One interesting Naruto fanfiction could be where Smart Naruto uses his intelligence to quickly learn and master new jutsus that others take years to understand. He might use his smarts to outwit his enemies in battles, coming up with strategies that no one expects.
One interesting Naruto village fanfiction could be about a new, powerful ninja emerging from the village. This ninja might have a unique power that no one has seen before, and they go on adventures to protect the village from unknown threats. For example, they could discover a hidden conspiracy within the village leadership that endangers all the villagers.