One possible plot could be that Vegeta, seeing Naruto's potential and his never - give - up attitude, decides to train him in combat techniques. He might introduce Naruto to Saiyan - style fighting, focusing on speed and power. Naruto, in turn, could teach Vegeta about chakra and how to use it in unique ways.
In a fanfic, Naruto might power up by having a spiritual awakening. He could connect with the spirits of past Hokages in a deeper way, gaining their knowledge and some of their power. This could enhance his existing jutsu and give him new abilities. Vegeta could power up if he were to face a near - death experience against Naruto. This could trigger a hidden potential within him, like a new type of Super Saiyan form that has unique abilities. He could also fuse with another Saiyan (if there were another Saiyan available in the fanfic's scenario) to create an even more powerful being.
In Naruto fanfic, scorpion trains could be some unique and creative interpretations. Maybe they are some kind of new jutsu - like a train - shaped attack made by a character who has scorpion - like abilities. For example, a character might use their chakra to form a large, scorpion - tailed train that can move at high speed and attack enemies.
One common theme is the clash of cultures. Naruto comes from a world of ninjas with its own set of values like teamwork and perseverance, while Vegeta is from a world of Saiyans where power and pride are highly valued. So, many fanfics explore how these two different cultures interact when the characters meet.
In some fanfictions, Vegeta might train Gohan in a way that combines Saiyan and Earthling techniques. For example, he could teach Gohan how to use Saiyan rage in combination with Earthling martial arts forms. This would create a unique fighting style for Gohan. Another aspect could be that Vegeta uses his own experiences of growing up as a Saiyan warrior to train Gohan, making him more battle - hardened and less naive in combat situations.
In the 'naruto trains boruto fanfic', Naruto might teach Boruto some powerful ninja techniques. For example, he could show Boruto how to master the Rasengan more effectively. Maybe he'd also train Boruto in the art of stealth and how to read an opponent's moves better.
In a Tsunade - Naruto training fanfic, the plot might involve Tsunade helping Naruto to better understand and utilize the Nine - Tails' chakra. She has vast knowledge and experience, so she could teach him how to draw on that power without losing control. For example, she could create special training exercises that mimic real - life battle situations where Naruto has to rely on the Nine - Tails' chakra to win.
One potential storyline could be Naruto training Boruto to unlock a new form. This new form could be a combination of Boruto's unique abilities and Naruto's power. Another storyline might be Naruto teaching Boruto how to deal with the pressure of being his son and living up to the Uzumaki name.
One possible theme could be friendship. Since both Naruto and Natsu (from Fairy Tail) are known for their strong bonds with their friends, a fanfic could explore how characters from both series form new friendships or strengthen existing ones while on the 'trains' adventure.
Well, in such a fanfic, Naruto might focus on mastering a new jutsu. He could be in a secluded area, like the forest near the village. He would practice over and over, facing challenges like controlling his chakra better. Maybe he'd also be thinking about how to become stronger to protect his friends and the village.