The theme of sacrifice can also be found in some Ultraman Zero fanfiction. Zero might have to sacrifice something, like a part of his power or a relationship, in order to achieve a greater good. This adds depth and drama to the story.
One common theme is heroism. Ultraman Zero is often depicted as a heroic figure, facing great challenges and saving the day. Another theme is friendship, like his relationships with other Ultramen.
One common theme is the exploration of his powers. Fanfictions often dig deeper into how his powers work and what their limits are.
One common theme is friendship. Since Zero and Jude are the main characters, their relationship is often explored, like how they rely on each other in difficult times.
Often, the theme of loyalty pops up in jude and zero fanfiction. Their loyalty to one another is a big draw for writers. They might be in a situation where they have to choose between different paths, but their loyalty to each other never wavers. Also, the theme of discovery can be seen, as they discover new things about themselves, each other, and the world around them while in the midst of the story's plot.
One common theme is family. The arrival of the baby forces Zero and Kaname to create a sort of family unit, which is quite different from their previous relationship. They have to deal with parenting responsibilities, which brings a new kind of closeness or conflict.
One common theme is the exploration of their complex relationship. Given their characters' backgrounds and the story's context, many fanfictions delve into how they interact with each other, the unspoken feelings, and the conflicts that arise from their different natures.
Often, you'll find the theme of self - discovery. As they interact, both Takuma and Zero learn more about themselves. Also, loyalty is a big theme. They show loyalty to each other in many of the fanfictions, especially when facing difficulties or enemies.
Love is a very common theme. It could be a romantic love between Zero Kiryu and a female character. Another theme might be friendship, showing how a female character and Zero Kiryu become good friends and support each other. Adventure is also common, with them going on quests together.
The theme of identity is also very common. Zero has to figure out who he really is, whether he's a human, a vampire, or something in between. Additionally, redemption is a popular theme. Given Zero's actions and his inner turmoil, many fanfictions explore his journey towards redemption. There's also the theme of power, like how Zero gains or loses power and how he uses it.
One common theme could be conflict. Since it's 'yuki hurts zero', there might be some sort of emotional or physical conflict between the two characters.
One common theme is the struggle between their different natures. Yuki might be seen as more innocent and Zero as more brooding, and the kiss can be a moment of breaking down those barriers. Another theme could be forbidden love, as there might be reasons in the story's universe that make their relationship difficult.