The Naruto - Kid Buu fusion in fanfiction could be depicted as a being with a unique fashion sense. Since Naruto often wears orange and Kid Buu is mostly pink, the fused form might have a combination of those colors in its clothing or body markings. In terms of abilities, it could be shown as having the speed of Naruto when he uses his chakra to enhance his movement, combined with Kid Buu's ability to transform parts of his body into weapons. For example, the fused form could create Rasengan - like attacks from its hands which are also able to stretch like Kid Buu's arms.
Super Buu is definitely comical. His childish tantrums, odd behavior, and the way he reacts to situations often provide comic relief. However, it also depends on how you interpret his character and the context of the story.
I recommend the following novels to you:
1. [The Infinity of the Beginnings of Buu the Demonman]: The protagonist becomes Buu the Demonman and travels through many worlds, experiencing various adventure stories.
2. " Marvel's God-level Demon Man Buu ": The protagonist Chen Chen transmigrated to the Marvel Universe and obtained the ability of the Demon Man Buu. At the beginning, he obtained the Immortal Demon Body and began his devouring journey.
I hope you like my recommendation.
If Naruto fused with Majin Buu in fanfiction, the story might start with the fusion's initial confusion about its new powers and identity. As it tries to figure things out, it could attract the attention of various villains who see it as a threat or an opportunity. The story could then be about the fusion's journey to master its powers and find its place in the world while dealing with these antagonists.
They could start by trying to communicate. Since Majin Buu is often driven by his desires, the Naruto characters might try to use food or some form of entertainment to get his attention and start a conversation.
One way could be through a crossover device like a mysterious portal. Maybe Naruto and his friends are on a mission and accidentally stumble upon a portal that leads to the Dragon Ball universe where Majin Buu exists. They could initially mistake him for a new type of tailed beast. Then, they have to figure out how to deal with his unpredictable power and his appetite for destruction, which could add a whole new level of chaos and adventure to the Naruto storyline.
Begin by brainstorming unique scenarios. If it's a crossover with the Marvel Universe, consider how Majin Buu would interact with the different heroes and villains. You could start with a simple concept like Buu being summoned to Earth - 616 by a villain who wants to use his power, but then things go wrong as Buu has his own ideas and starts causing destruction across the Marvel world. Outline your story, develop your characters, and then start writing the actual fanfiction.
To start a Kid Buu crossover fanfiction, begin by brainstorming the crossovers that would make the most sense or be the most exciting. Let's say you choose the Star Wars universe. You should establish the rules of the crossover early on. How does Kid Buu's energy interact with the Force? Then, create a hook. It could be something like Kid Buu being drawn to the dark side of the Force. Now, introduce the Star Wars characters. Luke Skywalker might sense Kid Buu's presence and be determined to stop him. You can then start developing the plot by thinking about what Kid Buu wants in this new universe and how the Star Wars characters will oppose him.
In fanfiction, their relationship could develop in a really unique way. Imagine if there was a prophecy in both their worlds that only they could fulfill together. This would force them to work closely. At first, they might not get along because of their different personalities. Naruto is often headstrong and impulsive, while Female Majin Buu can be quite unpredictable. However, as they face challenges together, like powerful enemies from both universes combining forces, they would start to understand and respect each other. Naruto could teach Majin Buu about friendship and sacrifice, and Majin Buu could show Naruto some new ways of using energy and power. Their relationship could evolve into a deep and meaningful one, where they rely on each other for survival and the greater good.