Well, fanfictions in this category can vary greatly. They might include scenarios where Trunks and Bulma's relationship is explored in a more sensual way due to the 'lemon' aspect. But many fans might find this inappropriate as the original Dragon Ball is aimed at a wide audience, including younger viewers. It's always a bit of a gray area when it comes to these types of fan - created works.
I'm not really into that kind of lemon - filled fanfiction. However, generally, such fanfictions might explore a more romantic or even spicy relationship between Trunks and Bulma. But it's important to note that a lot of this type of content might not be in line with the original spirit of the Dragon Ball series.
The main characters are Future Trunks and Bulma. Future Trunks is a Saiyan - half human, half - Saiyan - who is known for his strength and determination. He has traveled through time to try and change the future for the better.
I'm not sure about 'good' in the sense of lemon - themed ones as they often cross into inappropriate territory. But if you just mean fanfictions about Trunks and Bulma in general, there are many that focus on their relationship in a more positive and story - driven way, without the 'lemon' elements.
One idea could be a story where Bulma invents a new device to help Baby Trunks train more effectively. For example, she creates a gravity simulator that allows him to train in conditions similar to different planets.
One idea could be that Trunks discovers a new power while on a mission, and Bulma helps him control it in a unique way. Maybe she creates a device that can enhance his power but also has some unforeseen side effects that lead to some comical and heartwarming moments between them.
One idea could be a time - travel twist. Maybe Bulma discovers a way to travel to a different timeline where Trunks is older and there's a complex relationship that develops between them, full of emotional turmoil and discovery. It could explore themes of love across different versions of themselves.
A fanfiction could focus on a day in the life of the family. Bulma could be working on some new invention in her lab, Vegeta is training hard outside, and Baby Trunks is getting into all sorts of cute mischief. Then, something unexpected like a small alien invasion occurs near their home, and they all have to work together to deal with it.
Character growth is another significant aspect. Mai might start off as a bit of a wildcard, but as the story progresses, she could become more empathetic and understanding. Trunks, on the other hand, might learn to be more in touch with his emotions through his relationship with Mai. These changes in their characters are what make the fanfiction engaging and believable.
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.
One idea could be a story about Bulma's inventions and how Baby Trunks gets involved in her experiments. For example, he could accidentally activate a device that sends them on an adventure through time or to a different dimension.
The story could explore how the news of Bulma's pregnancy affects their friends and family. Goku might be excited to have another Saiyan baby around, and Chi - Chi could offer Bulma some advice on pregnancy. Meanwhile, the Z - Fighters might be on high alert, fearing that the pregnancy could attract the attention of villains who would want to harm Bulma or the unborn child.