One common theme is the power of their partnership. In many fanfics, they are shown as a force to be reckoned with when they combine their shamanic powers. Another theme is love and loyalty. Their relationship is often explored in terms of how they are loyal to each other despite the challenges they face.
There's a fanfic titled 'Yoh and Anna: A Shared Destiny'. It focuses on their early days together and how they gradually came to understand and rely on one another. It shows the growth of their relationship from a rather rocky start to a deep and unbreakable bond. It has some really nice character development for both Yoh and Anna.
A plot could revolve around a high school dance. Yoh wants to ask Anna to the dance, but he's really nervous. Meanwhile, there are some dark spirits that are attracted to the energy of the dance. Yoh and Anna have to protect the school from these spirits while also dealing with their feelings for each other. Yoh might even try to serenade Anna with his shaman powers in a really cute and awkward way.
In a high school setting, Yoh's character could develop by becoming more responsible. For example, he might take on leadership roles in school clubs related to the spirit world. This would force him to be more organized and decisive, which are traits he doesn't always show. Anna, on the other hand, could learn to be more open - minded. She could start to see the value in Yoh's more relaxed approach to things when they deal with high school problems like handling difficult teachers or mean classmates.
One common theme is the battle of ideologies. Hao believes in a more forceful approach to shaman rule, while Yoh has a more laid - back and harmonious view. Fanfictions often explore how these different beliefs clash and interact.
Yes, there are many. Some focus on their complex relationship in the shaman world, like how their different views on power and the future of shamans create interesting storylines.
A prevalent theme is the power of their partnership. Their combined abilities as shamans are often a key part of the story. Also, loyalty is a big theme. They are shown to be loyal to each other no matter what challenges they face. Some fanfictions also explore the idea of sacrifice in their relationship, where one might sacrifice for the other's well - being.
One common theme is redemption. Since Hao is often seen as the antagonist in the original, fanfics might explore his redemption through his relationship with Yoh.
Power dynamics can also be a theme. If Yoh and Anna have different levels of power or abilities in their original story, how they handle those differences in their relationship within the fanfic can be an interesting aspect. Maybe one is more powerful and has to protect the other, or they learn to combine their powers for a common goal, all while dealing with their personal feelings for each other.