One possibility is that Naruto is transported to the world of Akame ga Kill and is given a Teigu. He then has to adapt to this new world while using the power of the Teigu to survive and maybe find a way back to his own world. It could also explore how his ninja skills and the power of the Teigu combine.
It could be about Naruto finding a Teigu during one of his adventures. Maybe he discovers it in a hidden place and has to figure out how to use it to fight his enemies in the Naruto world.
Well, given the creativity of fanfiction writers, it's highly likely that there exists a 'Naruto has a Teigu' fanfiction. Fanfiction allows for all kinds of wild and imaginative crossovers. Some writers might be intrigued by the idea of Naruto, a ninja from the Hidden Leaf, having a Teigu, a powerful weapon from another world. They might explore how Naruto would use it, how it would change his battles, or how it would affect his relationships with other characters in the Naruto universe. You can use search engines specifically for fanfiction to look for it.
Well, it might be about how Naruto's life changes with the ketsuryugan. He could face new enemies who are interested in this new power he has. Also, his friends might react in different ways, some being worried and some being excited. And he could use the ketsuryugan to unlock new jutsu or abilities that are related to it. He might also have to deal with the origin of the ketsuryugan and any secrets that come with it. This could lead to a whole new adventure for Naruto, exploring new places and meeting new characters in the process.
It could be about Naruto obtaining a Persona. Maybe during one of his adventures, he stumbles upon a strange power that turns out to be a Persona. He then has to learn how to control it while still using his ninja skills.
Perhaps it's about Naruto being transported to the Dark Carnival universe and having to team up with some of the characters from that world to stop an even greater evil. He could bring his values of friendship and perseverance to the new setting, which would contrast with the more dark and twisted nature of the Dark Carnival.
Well, perhaps in this fanfiction, Naruto's 'green thumb' is a result of some sort of chakra - related power. He might be able to make plants grow super fast or even communicate with them. It could show Naruto in a different light, away from his usual ninja battles, as he nurtures a beautiful garden filled with all kinds of exotic plants that are useful for medicine or other things in the ninja world.
Perhaps in this fanfiction, Naruto is given White Zangetsu as a gift from a mysterious figure. With it, he discovers new powers and abilities. He might have to train hard to master it, and in the process, he could face challenges not only from his own world but also from forces that are attracted to the power of White Zangetsu. This could lead to new alliances and enemies for Naruto, completely changing the dynamics of the Naruto universe.
Well, it could be about Naruto finding a stray cat on one of his missions. The cat might have some special abilities, like being able to sense chakra. Naruto takes the cat in and they form a bond. The cat could then accompany Naruto on his adventures, helping him out in unexpected ways during battles, like distracting the enemy with its cuteness or using its special chakra - sensing ability to detect hidden traps.
In this fanfiction, the velocoraptor could be a reincarnation of a powerful ninja from the past. Naruto stumbles upon it while on a solo training journey. At first, he doesn't understand what it is, but as he gets to know it, he realizes its true nature. They then embark on a journey to restore the velocoraptor's past memories and powers, all while facing challenges from other ninja clans who fear the power of the velocoraptor - ninja combination.
One possible plot could be that Naruto discovers Vulpix lost in the woods near Konoha. He decides to take care of it and Vulpix becomes his loyal sidekick, using its fire - based attacks to help Naruto in battles.
In this fanfiction, Naruto might grow all kinds of unique plants in his garden. Maybe he uses his ninja skills to take care of the plants in an extraordinary way, like using shadow clones to water all the plants at once.