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.
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 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.
Yes, there are quite a few. You can start by looking on fanfic platforms like FanFiction.net or Archive of Our Own. Some fanfics might focus on alternate universes where Raditz has a different relationship with Bulma and Trunks, perhaps a more friendly or even a mentorship - like relationship. However, the quality can vary greatly, so it's important to read reviews or summaries before diving in.
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.
One common theme is family dynamics. Since Trunks has a family connection with Bulma, and Raditz being an outsider, the fanfics might explore how Raditz fits into or affects that family unit. Another theme could be redemption. Raditz was initially a villain, so fanfics could show him redeeming himself in the eyes of Bulma and Trunks.
One interesting Bulma Trunks fanfic could be the one where Trunks travels back in time and Bulma has to help him adjust to the past without giving away too much about the future. It's full of heartwarming mother - son moments.
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.
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.
A great plot twist could be that Baby Trunks is actually from an alternate future where things are very different. This would change the whole dynamic of how Bulma relates to him. Maybe in this future, Bulma didn't survive, and now he has come back to change the past.