Another storyline could involve Pakura being reincarnated and Naruto has to protect her from those who want to use her power for evil. Along the way, they develop a deep friendship as Naruto helps her understand the modern ninja world and she in turn helps him with his battles using her combat experience.
Another storyline could involve Dark Naruto being transported to Azula's world. At first, they are at odds as they misunderstand each other's motives. But as time passes, they realize they share a common goal of power and control. They start to train together, with Naruto teaching Azula some of his more devious ninja tactics and Azula showing Naruto the finer points of firebending. Eventually, they rule over a part of the Avatar world together.
One possible storyline could be that Naruto and Sakura go on a dangerous mission together. During this mission, they face many challenges that test their friendship and skills. Another could be a story where Sakura discovers a new power and Naruto helps her to master it. They might also have a story where they get lost in a mysterious forest and have to rely on each other to find their way out.
One possible storyline could be Naruto being possessed by a Devilman - like entity. His friends then have to find a way to free him while dealing with the new, more dangerous Naruto. Another could be Naruto willingly accepting Devilman - like powers to defeat a greater threat, but then struggling to control them.
One possible storyline could be that Naruto is kidnapped by a rogue ninja group who wants to use his power for their own evil deeds. They might try to force him to reveal the secrets of his special jutsu. Another could be that he is kidnapped by a mysterious organization that believes he is the key to a long - lost prophecy. They hold him captive while they try to figure out how to use him to fulfill the prophecy. A third storyline could be that Naruto is kidnapped by a group of enemy ninjas from another village who see him as a threat to their plans for domination.
Well, perhaps a group of ninjas from another village wants to create an alliance with Konoha through marriage. They trick Naruto by disguising one of their own as a Konoha citizen he trusts. They manipulate situations so that Naruto feels obligated to marry this person. Or it could be that a jealous rival within Konoha who wants to get rid of Naruto for some reason sets up a very elaborate scheme to make him marry someone who will cause him trouble, like a person with a bad reputation among the villagers.
Well, in some fanfics, Sakura might be jealous of Naruto's growing power and relationship with others. So she could try to undermine him, which in turn hurts Naruto. Maybe she spreads false rumors about him in the village. Another idea is that Sakura is forced to choose between Naruto and Sasuke in a dangerous situation, and her choice, even if it's not completely her fault, ends up hurting Naruto deeply. It could also be that Sakura's overzealous medical treatment, in an attempt to save Naruto from a serious injury, actually causes him more pain and harm.
One possible storyline could be Naruto struggling to master the precise and gentle chakra control required for medical ninjutsu. He might initially face setbacks as his usual brash and powerful chakra use doesn't work well in this new field. Another could be that he discovers a unique way to combine his shadow clone jutsu with medical treatment, like using clones to perform multiple healing tasks simultaneously. Also, he could face opposition from some in the medical ninja community who doubt his ability to be a healer due to his past as a more combat - oriented ninja.
One possible storyline could be Naruto, in his dominant role, challenging Kaguya's power. He might use his newfound dominance to outwit her in battles, leading to a series of intense face - offs. Another could be a more psychological exploration where Naruto tries to understand Kaguya's past and motives from a dominant, in - control perspective, and through this, they develop a strange relationship.
Well, perhaps in the 'naruto abused by kushina fanfic', it could start with Kushina having a premonition of Naruto causing great harm in the future. So, in her attempt to prevent that, she goes overboard and starts abusing him. Or it could be due to some long - hidden family secret that makes her act out against Naruto, thinking she's doing the right thing for the family or the village in the long run.
In a fanfic, Tsunade's pregnancy might be a result of some sort of experimental medical jutsu gone wrong. Naruto could be the one to find a way to reverse it if she doesn't want the baby, or he could help her through the difficult pregnancy. He could also help protect her from those who might see her pregnancy as a weakness to exploit in the village.