What are the common themes in yamato x hibiki fanfic?

Sure. You can start by looking on some popular fanfiction websites like Archive of Our Own. Just search for 'yamato x hibiki' in the search bar and you'll find a variety of fanfics. Some might be AU (alternate universe), some might be based on the original storylines. It really depends on what kind of story you're into.

One common theme is friendship. Their relationship often starts as a friendship which then may develop into something more. For example, in many fics, they start by helping each other with school or personal problems, which deepens their connection.

In 'yamato x naruto fanfiction', the theme of camaraderie is quite common. They are comrades in the Naruto world, and fanfictions like to expand on that. There might also be themes related to understanding each other's pasts. Yamato has his own backstory, and Naruto has his, and fanfictions might explore how they come to understand and empathize with each other's experiences more deeply.

One common theme is mentorship. Yamato often takes on a mentorship role towards Naruto, guiding him in his growth as a ninja. For example, in many fics, Yamato helps Naruto control his chakra better, just like he did in the original series.

A fanfiction could focus on a different timeline where Yamato and Hibiki meet earlier. Maybe they start as rivals, but gradually realize they have more in common than they thought. This could lead to an interesting exploration of their relationship, from animosity to friendship and perhaps something more. Their interactions could be filled with witty banter and moments of mutual understanding.

One common theme could be friendship turned into something more. Since Naruto and Yamato have a relationship within the original series, fanfiction might explore how that bond deepens into a romantic one.

One common theme is the exploration of different power systems. Since Naruto has its own set of powers like chakra and jutsus, and One Piece has Devil Fruits and Haki, seeing how characters interact with these different power systems can be a big part of the fanfictions.

Their abilities also complement each other. Yamato might have strategic skills and knowledge that Hibiki lacks, and Hibiki has a certain intuition and courage that Yamato could use. In a fanfiction, they could combine their strengths to achieve great things. For instance, in a battle against a powerful demon, Yamato could come up with a plan and Hibiki could execute it with her boldness. And their relationship can develop as they rely on each other more and more in these situations.

There could be themes like friendship. Maybe the tickling situation is a way to show the closeness between characters. Another theme might be adventure, where the tickling incident occurs during an adventure that Captain Yamato is on.

Power growth is also a common theme. In these fanfictions, Hibiki often starts with a certain level of power and then, through training, battles, and interactions with powerful Fairy Tail mages, he grows in strength. And of course, the theme of loyalty. Hibiki has to decide where his loyalties lie, whether it's with his original group or with the Fairy Tail guild, and this is explored in many fanfictions.