In some fanfictions, Naruto might gain the ability to control the flood through a special training with a hermit who has water - based powers. This hermit could teach Naruto unique jutsu related to water manipulation on a large scale.
Foxes are quite common. Given Naruto's connection with the Nine - Tailed Fox, it makes sense that in fanfiction, he might be able to control other foxes. They can be used for scouting or as distractions in battles.
The exploration of their relationship is also important. It could be a romantic relationship where Hinata's control adds a new layer of depth. Maybe she controls Naruto in a way that helps him understand his feelings for her better. Or it could be a platonic relationship where she helps him grow as a ninja by controlling certain aspects of his training or decision - making process. In many cases, it shows how Hinata's influence can be a positive force for Naruto.
In 'naruto controls the darkness' fanfiction, it could also be that Naruto is exposed to a dark energy source accidentally. This energy starts to influence his thoughts and actions in negative ways at first. But being Naruto, he doesn't give in. He uses his strong willpower and the positive relationships he has with his friends like Sasuke, Sakura, and others to find a way to control this new dark power. He might have to face some of his own demons from his past, like the loneliness he felt as a child or the times he failed to protect his friends, and use these experiences to better understand and control the darkness within him.
It could be the Akatsuki members. Since they are often the main villains in the Naruto universe, they might also play that role in this fanfiction. They could be trying to stop Naruto from using his control over Sakura to achieve something that would be a threat to their plans.
One idea could be that Naruto discovers a strange new chakra within the headcrabs. He then figures out how to manipulate this chakra to control their actions. He might train them to perform tasks like scouting or even to help in rebuilding damaged villages by using their physical strength.
Well, in this kind of fanfiction, Naruto might use his powerful jutsu to influence political situations across the ninja world. He could impose his ideas of peace on all the hidden villages, uniting them under his leadership through sheer force and charisma.
It could be some of the traditional power - hungry ninja clans who oppose Naruto's new world order. They might see his attempts at global control as a threat to their own interests and try to undermine him.
Crows are also often seen. Crows are intelligent and can be used for spying or sending messages. Naruto in fanfiction might control them to gather intelligence on his enemies. And they can be very stealthy, flying around unnoticed most of the time.
In this fanfiction, Naruto's ability to control shadows could be related to his connection with the Nine - Tails. Maybe the power of the Nine - Tails unlocks this new ability within him. He could use the shadows to form shields against attacks, or even to travel quickly from one place to another by using the shadows as a sort of transportation network within the ninja world.