A possible storyline is that Naruto is transported to a parallel dimension where all ninjas have elemental powers from birth. There, he is initially at a disadvantage because he doesn't know how to use his new - found fire control. But with the help of some friendly locals, he starts to master it and eventually uses it to fight against an evil dictator in that dimension who is trying to take over all the ninja clans. Another storyline could be that Naruto's fire control is tied to his emotions. So, when he gets angry, the fire becomes uncontrollable. He has to learn emotional control along with mastering the power to use it effectively in battle and in his daily ninja life.
He might attract the wrong kind of attention. Evil ninja or dark organizations could see him as a valuable asset or a threat. They might try to either recruit him or eliminate him. This would put Naruto in a lot of dangerous situations, constantly having to defend himself against these new enemies.
One storyline could be Naruto using the bijuu powers to unite all the ninja villages. He could show off his power and convince them that working together is better. Another could be him facing off against a new, even more powerful enemy that is attracted by his collection of bijuu. Maybe a powerful demon from another dimension.
A potential storyline could be Naruto growing up with two very different mothers. One is a strict ninja from a noble clan, and the other is a more free - spirited healer. Naruto has to balance their different expectations and ways of life. He might learn different types of jutsu from each of them, and their conflicting ideas about his future as a ninja create internal conflict for Naruto.
In fanfiction, Naruto could potentially control a wide variety of animals. For example, he could control small and nimble animals like squirrels. Squirrels are quick and resourceful, which could be useful in various situations. He may also have control over larger animals such as bears. Bears are strong and intimidating, and Naruto could use their strength for protection or combat. Another possibility is that he can control dolphins if the story involves water - related scenarios. Dolphins are intelligent and friendly, and they could help Naruto in underwater missions or just be his companions in a more aquatic - themed fanfiction.
A possible storyline is that Naruto becomes a sort of unifying figure among the clans. With his multiple bloodlines, he could bridge the gaps between different clans that have had historical rivalries. For example, the Uchiha and the Senju. He might also discover a hidden prophecy related to his bloodline combination that makes him the key to saving the ninja world from a new, greater threat. Or, he could accidentally unlock a super - powerful technique that is only possible with his unique blend of bloodlines and has to figure out how to control it before it destroys him.
Well, it could make his combat style more aggressive. He might start using more direct, offensive moves. For example, he could send out waves of fire towards his opponents, forcing them to constantly be on the defensive. Also, he could combine his fire control with his existing ninja skills, like the Shadow Clone Jutsu. The clones could surround the enemy and then all release fire at once, creating a sort of inescapable ring of fire.
One possible ability is the control of entropy. Naruto could reverse the decay or disorder of things. He could repair broken objects or even heal wounds by reversing the natural process of damage. Also, he could control electromagnetic fields. This would allow him to disrupt enemy electronics if there were any in the Naruto world, or he could use it to attract or repel metal objects.
Well, Naruto's control over physics could completely turn the plot upside down. He could use it to create new jutsus that defy normal physical laws. For example, he might be able to make objects move without any force being visibly applied, which could give him an edge in battles. This new power would also make his enemies have to re - evaluate their strategies against him.
Perhaps a story where Naruto's fire powers are not fully under his control at the start. He accidentally sets things on fire and has to go on a journey to learn how to master them. Along the way, he meets an old sage who teaches him unique techniques related to his fire powers.
Naruto could develop his water control abilities through intense meditation. By focusing his chakra and mind, he can better understand the nature of water. He may also study the movements of water in nature, such as how rivers flow and how water droplets form. This knowledge would then be applied to his jutsu, gradually improving his control.