In DBZ Vegeta and Bulma fanfiction, there can be alternate universes explored. Maybe in one universe, they meet under different circumstances. For instance, instead of Vegeta coming to Earth as an enemy, he could be an ally from the start. This would completely change the dynamics of their relationship. It could lead to a more romantic and less combative start to their relationship, and the fanfiction could explore how this different beginning affects their future together.
Perhaps in this fanfiction, there's a lemon - loving alien race in the DBZ world. Bulma, being the curious scientist, wants to study them, and Vegeta is dragged along. Along the way, they face challenges that force them to work together in new ways, and their relationship deepens as they navigate through this lemon - related encounter.
Another common plot is the 'time - travel' scenario. Given the time - travel elements in DBZ, some fanfictions might send Vegeta or Bulma back in time. This can lead to interesting situations where they have to interact with their younger selves or change certain events in the past. It also gives a chance to explore their relationship in a different timeline.
Well, it could be about Vegeta and Bulma facing some new and powerful black - themed threat. Maybe there's a new villain who has the power to burn things with black energy and they have to figure out how to stop it together. Vegeta might use his Saiyan strength and Bulma her intelligence.
A fanfic could start with Bulma being frustrated with Vegeta's training habits as they disrupt her work in the Capsule Corp. But then, she sees his determination and how hard he is trying to keep up with the powerful enemies. This admiration turns into love. Vegeta, on the other hand, is attracted to Bulma's intelligence and her ability to stand up to him. They start to have secret rendezvous, stealing moments together away from the chaos of the Saiyan battles and Earth's problems.
Well, it could be that Bulma discovers a lemon - shaped crystal that has some sort of power - enhancing properties. She wants Vegeta to test it out. Vegeta is initially skeptical but eventually agrees. However, the crystal has some side - effects that start to change Vegeta's personality a bit. Bulma then has to find a way to reverse the effects while also dealing with a new, more unpredictable Vegeta. This could lead to a lot of interesting character interactions and plot twists.
There's a possibility that it's a dark wizard - like being who has created this burning black energy as a weapon. He might have some vendetta against Bulma because of her scientific achievements that he sees as a threat to his magic - based power. And Vegeta gets in his way when he tries to harm Bulma, making them the main targets of this antagonist.
One interesting plot could be where Vegeta has to go back to Planet Vegeta in a vision or some sort of time - travel scenario. Bulma, being in love with him, follows him. There, they face the old ways of the Saiyans and have to fight against the traditional norms to be together. It shows how their love overcomes not only the differences in their personalities but also the cultural differences between Earth and Planet Vegeta.
Vegeta would likely still be his proud and strong - willed self, but with a newfound tenderness towards Bulma. He might be a bit more protective and less quick to anger. Bulma, on the other hand, would be her intelligent and sassy self, always ready to challenge Vegeta in a playful way.
Another character could be Dr. Briefs, Bulma's father. In the alternate universe, he might have a more prominent role in bringing Vegeta and Bulma together. For example, he could be the one who arranges for Vegeta to work on a project with Bulma, which starts their relationship on a more professional note that gradually turns into something more personal.