In some 'naruto goes mad' fanfictions, Naruto might be driven mad by the loss of his friends. For example, if Sasuke were to die in a battle, Naruto could lose his grip on sanity. Another plot could be the result of some dark jutsu being used on him, like a genjutsu that messes with his mind. Maybe a powerful enemy targets his mental state to turn him into a weapon against the Hidden Leaf.
Well, in some of these fanfictions, Naruto could go mad due to being overexposed to the Nine - Tails' chakra. The constant struggle with the beast within could take a toll on his mental state. This could lead to him having wild mood swings and eventually losing his mind. He might start to see his friends as enemies and lash out at them, creating a whole new set of challenges for the characters in the story.
One common plot is that Naruto is pushed to the edge by the constant betrayal he faces. In fanfiction, some writers may create scenarios where the village turns against him, which could lead to his madness. He might then use his power in unexpected and dangerous ways. Also, the discovery of some dark secrets about his family or the village's past could shatter his world and drive him mad.
In some 'naruto goes blind fanfiction', an interesting plot could be Naruto having to rely on his other senses more. For example, his sense of smell and hearing become super sharp, allowing him to detect enemies and navigate in battles like a true ninja. He might also develop new jutsus that are more suitable for his blind state, like a sound - based attack that can stun opponents.
Well, in some 'naruto goes to alternate universe fanfiction' plots, Naruto might find himself in a world where all the ninja clans have merged into one big super - clan. He'd have to navigate the complex politics within this new structure. Also, there could be a plot where he enters an alternate universe where the Fourth Great Ninja War never happened, but there are new threats emerging that he has to face. And then there's the idea of a universe where Naruto's parents are alive, and he has to deal with a completely different family dynamic.
One interesting plot could be Kurama using his knowledge from the future to prevent certain tragedies in Naruto's past. For example, he might stop Orochimaru's early attacks on Konoha more effectively. Another plot could be Kurama helping Naruto train earlier and more efficiently, leading to Naruto becoming much stronger at a younger age. And perhaps Kurama could also change some of the relationships within the village, like improving Naruto's standing among the villagers much sooner.
One interesting plot could be Naruto Uchiha using his future knowledge to prevent the Uchiha massacre. He might try to change the minds of the village elders and stop the cycle of hatred before it spirals out of control.
One interesting plot could be that female Naruto goes back in time and uses her knowledge from the future to prevent the destruction of her village. She might try to stop certain villains from emerging or change the fates of her friends who died in the original timeline. For example, she could stop Orochimaru's early evil plans, which would have a huge impact on the story's development.
One interesting plot could be Naruto using his future knowledge to prevent some of the tragedies that happened in the original story. For example, he might be able to stop the Uchiha massacre. Another plot could be him training his younger self, leading to a much stronger Naruto earlier on. And perhaps he could also change the relationship between the different ninja villages, promoting more peace and cooperation from an earlier stage.
Obviously, Naruto is the central character as the title 'naruto goes mad' implies. Sasuke often plays a crucial role too. He might be the cause of Naruto's madness in some cases, like if he betrays Naruto again in a more extreme way. Sakura could also be involved, perhaps trying to bring Naruto back from his madness. And Kakashi, as Naruto's former teacher, may try to figure out what's wrong with Naruto and find a way to help him.
One interesting plot could be Harry having to deal with the Slytherin's traditional pure - blood supremacist views while trying to stay true to his own values. He might face challenges from some of his Slytherin housemates who initially look down on him for his 'half - blood' status.
One interesting plot could be Stiles forming an unlikely friendship with the Cullens. He might bring his unique sense of humor and problem - solving skills to Forks. Another plot could involve Stiles getting caught up in the vampire - werewolf drama there, perhaps using his knowledge from his own supernatural experiences to try and keep the peace. Or he could be on a mission to find something in Forks that is related to his own world's mysteries.
There could also be a plot where Hermione discovers a long - lost Slytherin secret. It might be a powerful spell or a hidden chamber that only a Slytherin with her unique combination of knowledge and determination can unlock. This discovery then changes the way Slytherin is perceived in the wizarding community.