Well, Naruto would probably be a natural at taekwondo. He has great physical strength and stamina from all his ninja training. His kicks would be super powerful. He might incorporate some of his ninja moves into taekwondo techniques, creating a unique fighting style.
Naruto could become more confident in his physical abilities. Since taekwondo focuses on precise and powerful strikes, mastering it would give him a new sense of self - assurance. He may also be more respectful of different fighting styles and cultures, as taekwondo has its own unique heritage. This newfound respect could make him more open - minded in general. He might start to see the value in non - ninja combat techniques and be more inclusive when it comes to training with others.
One possible plotline could be that Naruto himself decides to learn Taekwondo to improve his fighting skills. He might meet a Taekwondo master from another land who comes to the Hidden Leaf Village. Another could be that in a new era of renewal in the Naruto world, the shinobi start to incorporate Taekwondo moves into their combat training to adapt to new threats.
He might learn a time - traveling jutsu. This would be really cool as it could allow him to go back and change certain events in the Naruto world, or gain knowledge from the past to use in the present battles.
I'm not sure of specific 'Naruto renewal Taekwondo fanfiction' off - hand. You could try searching on fanfiction websites like FanFiction.net or Archive of Our Own. Just type in the keywords 'Naruto', 'renewal' and 'Taekwondo' in the search bar and see what comes up.
One possible scenario in this fanfiction could be that Naruto, being banished from his village, stumbles upon a magical realm. There, he might meet a mentor who teaches him magic. This could lead to him developing new powers and a whole new identity, different from the ninja he once was. It could also open up opportunities for crossovers with other magical universes in the fanfiction world.
In fanfiction, Naruto learning the Vacuum Jutsu could be really cool. It might give him a new and powerful offensive technique. Maybe he'd learn it from an unexpected source, like an old hermit in a forgotten land. This could potentially change the power dynamics in battles he's in.
Sakura could be the one teaching him. She's known for being intelligent and having good domestic skills. She might start by showing Naruto the basics in the kitchen, like how to hold a knife properly and how to chop vegetables evenly.
A traveling nen master could be Naruto's mentor. This master could be on a journey to spread the knowledge of nen. He crosses paths with Naruto and decides to teach him. The master might have a strict teaching style, pushing Naruto to his limits, but also guiding him carefully through the complex world of nen.
There's a possibility that it's a spirit or a deity in the world of bending. This entity is impressed by Naruto's tenacity and chooses to guide him on his journey of learning bending.