There are quite a few. One example is 'The Taijutsu Masters of Konoha' where Naruto and a few others focus solely on perfecting their hand-to-hand combat skills.
You might want to check out 'The Pure Taijutsu Path'. It shows how Naruto and his friends abandon other techniques and master taijutsu to become unbeatable in battle.
One great 'naruto taijutsu only fanfic' is 'The Taijutsu Prodigy'. It focuses on a new character who has an amazing talent for taijutsu and their journey in the Naruto world. Another is 'Taijutsu Ascension' which shows in - depth training and development of taijutsu skills. There's also 'Naruto: Pure Taijutsu' which explores unique taijutsu styles not seen in the original series.
It could be an old hermit. You know, those wise old guys who live in the mountains and have been guarding ancient ninja secrets. He sees potential in Naruto and decides to pass on the lost taijutsu to him.
Well, I know of a fanfiction called 'Heterochromia's Destiny'. In it, the character with heterochromia is on a journey to discover the true meaning and power behind their unique eyes. Also, 'The Mysterious Heterochromatic Ninja' is quite popular. It tells the story of a ninja with heterochromia who has a special ability that no one else in the Naruto world has. These fanfictions often use heterochromia to add an extra layer of mystery and excitement to the Naruto - inspired stories.
He'd need to do a lot of strength training. Lifting weights, doing push - ups and sit - ups to build muscle. Also, he'd need to practice his balance, like standing on one leg for long periods or walking on narrow beams. And he should practice different punching and kicking combinations to make his attacks more fluid.
Rock Lee is another excellent choice. Since he focuses so much on taijutsu already, it would be interesting to see him incorporate beast - like elements into his moves. He could observe the power and speed of beasts and try to mimic them in his own way, adding a whole new dimension to his already impressive fighting abilities.
Some fanfictions also give Naruto himself godlike taijutsu abilities. While he is known for his Rasengan and other jutsu, in these stories, he might have spent extra time training his physical combat skills. This could be due to a special training arc where he meets a master who teaches him ancient taijutsu forms that were long forgotten. This would add a new dimension to his character, making him even more of a force to be reckoned with in both long - range and close - range battles.
His battle strategies would change a great deal. Naruto is known for his diverse range of skills in the original series. But if he can only use Taijutsu, he'd likely start by observing his opponents more carefully. He'd need to analyze their fighting styles and look for patterns. Then, he'd use his own Taijutsu in a more calculated way. Maybe he'd combine different types of physical attacks, like a series of kicks followed by a powerful uppercut. He'd also have to work on his physical strength and endurance more, since he can't rely on other techniques to give him an edge.
You can start by looking on fanfiction.net. It has a large collection of Naruto - related fanfics, and you can easily search for 'naruto taijutsu only' within its search bar. Another option is Archive of Our Own (AO3). It also has a great selection of fanfics, and you might be able to find some unique 'naruto taijutsu only' stories there.
One of the best is 'Naruto's Sannin Adventure'. In this, Naruto embarks on a journey with the Sannin, and each stop on the journey teaches him something new about ninja life, power, and friendship. The author does a great job of portraying the relationships between Naruto and the Sannin. There's also 'The Sannin and Naruto's Destiny' which explores how the Sannin are intertwined with Naruto's destiny. It has a complex plot that keeps you hooked from start to finish.
Well, Rock Lee is definitely a standout taijutsu user in Naruto fanfic. His story of hard work and determination makes him a fan favorite. Then there's Might Guy, who has shown incredible feats of taijutsu in the original series and continues to be a force in fanfic. But some fanfics might also introduce OC (original character) who are taijutsu prodigies. These characters could have trained in secret or have a natural gift for taijutsu that sets them apart from the rest.