He might have a dissociative disorder in some fanfictions. Given the many life - threatening situations he's been in, his mind could potentially develop a way to dissociate as a coping mechanism. This would be an interesting take on his character and how he perceives the world around him.
One possibility could be a time-travel fanfiction where Naruto acquires Mokuton through some ancient technique or encounter in the past.
It could be that in this fanfiction, Naruto inherits the Rinnegan from a long-lost ancestor, unlocking hidden powers and facing new challenges.
He could have a summon - like animal as a pet. For example, a toad that he befriends and keeps as a pet instead of just using for summons in battles.
He could have ninja - like minions. Maybe some young genin who look up to Naruto and decide to follow him. They could be skilled in different areas like stealth or long - range attacks.
He could have a dragon as a summon. A powerful and majestic dragon that can breathe fire or ice, which would give Naruto a huge advantage in battles.
A plot could involve Minako being a long - lost relative of Kushina. Naruto discovers this connection and together they explore what it means for their family. It could lead to revelations about Kushina's family history that Naruto never knew.
He could go on adventures to find lost fox clans. The foxes might ask for his help to locate their missing members or to protect their territory from other threats. Naruto, with his ninja skills and ability to talk to foxes, would be well - equipped for such quests.
They could be friends. In this kind of fanfiction, Naruto and Kushina might meet at the ninja academy and become fast friends. They could train together, share their dreams and secrets, and support each other through the tough times in the ninja world.
One ability could be enhanced attack power. The Truth - Seeking Orbs can be used to launch powerful strikes against enemies. For instance, Naruto could throw them like projectiles and they would explode on impact, causing massive damage.
An adventure where they have to stop an evil force that is threatening both of their worlds. Naruto could bring his knowledge of sealing jutsu to prevent the evil from spreading, and Noire could use her leadership skills to gather allies.