Well, you can try searching on some popular fanfic platforms like FanFiction.net or Archive of Our Own. Just type in 'naruto uses a knives' in their search bars, and you'll likely find a bunch of relevant fanfics.
Finding a particular 'naruto uses a knives fanfic' can be a bit of a hunt. Some fanfics might explore Naruto using knives in a combat situation where he's lost his access to his normal ninja tools. Others could have him using knives as part of a new training regime. You may have to dig through different tags and categories on fanfic websites to discover the perfect one for you.
One possible plotline could be that Naruto discovers a set of enchanted knives that give him new powers. He then has to learn how to master using them while still keeping his ninja skills intact.
I'm not sure of a specific 'naruto uses a rapier' fanfic off the top of my head. You could try searching on fanfic platforms like FanFiction.net or Archive of Our Own. They have a vast collection of Naruto fanfics and you might be able to find one that features Naruto using a rapier there.
The following are the recommended novels with the main characters using dual blades: Ancient Scroll of the Heavens, Tai Cang, Saber-Sword Emperor, Sacred Martial Sword Venerable, and Sword Suppressing Eternity. The protagonists of these novels all used dual-blade techniques. Each novel had different plots and elements to satisfy the readers 'preferences for dual-blade protagonists.
Well, one place to look could be on fanfiction.net. There are often a variety of Naruto - themed fanfics there, and you might be able to find some that involve Naruto using Shiki Fujin. Another option is Archive of Our Own (AO3). It has a large collection of fan - created works as well.
There might be a fanfic where Naruto applies logic in his training. He figures out the most efficient ways to improve his skills by studying the principles behind the jutsus rather than just repeating the same training routines over and over. He might use logic to understand how chakra flow affects the power and accuracy of his attacks.
One great 'naruto uses nintaijutsu fanfic' is 'The Nintaijutsu Prodigy'. In this fanfic, Naruto discovers a new way to combine his ninja skills with nintaijutsu, making him a formidable force. It has really exciting battle scenes where he outsmarts his opponents using this unique combination.
There are many fanfics out there with this concept. Some might focus on Naruto using the save point to prevent the destruction of Konoha. He could go back to key moments in the village's history and change things. This could involve stopping a powerful enemy from attacking or even changing internal political situations in the village that led to problems in the first place. These fanfics can be really creative in how they re - imagine the Naruto universe with this new element.
There's a fanfic called 'Naruto's Rinne Tensei Adventure'. Here, Naruto uses rinne tensei to save the village in a time of great peril. The story is full of action and also delves into the moral implications of using such a powerful jutsu. It's a great read if you like Naruto fanfics with a bit of depth.
There's a fanfic named 'The Blood - Naruto's Hidden Power'. In this story, Naruto's use of the blood release is intertwined with his journey to protect the village. The author does a great job of explaining how this new power fits into the Naruto universe and how Naruto overcomes the challenges that come with it. It has some really intense battle scenes where Naruto uses the blood release in unique ways.
Well, Naruto's combat style is mainly based on his ninja techniques and shadow clones. If he uses trench knives, it would add a more close - range and brutal aspect. He could combine the knives with his physical strength and speed, perhaps using them in quick slashing motions while using his clones to distract opponents. For example, he could send clones to draw the enemy's attention and then quickly close in with the trench knives for a surprise attack.