You can try fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms have a vast collection of fanfics, and you're likely to find many Bulma shows Goku fanfic there.
There are quite a few out there. 'Bulma's View of Goku' is a fanfic that focuses on Bulma's perspective of Goku. It shows how she sees his growth, his power, and his unique personality. It's really interesting as it gives a different take on their relationship compared to the original series.
I'm not sure if there is a specific 'Goku married Bulma' fanfic rated M. Fanfic content can vary greatly, and while there might be some creative and alternative storylines in the fanfic community, this particular combination might be quite different from the original story. It could exist, but it would be a deviation from the main Dragon Ball narrative.
There may be such fanfics in the vast world of fan - created content, but it often goes against the original storyline's intended relationships in the Dragon Ball series. In the official story, Goku is married to Chi - Chi, not Bulma.
Bulma and Goku are the main characters. Bulma is known for her intelligence and her somewhat feisty nature. She's not afraid to speak her mind, especially when she feels wronged. Goku, with his innocent and straightforward personality, sometimes doesn't fully understand the implications of his actions. In a 'bulma goku mistake fanfic', their contrasting traits are what drive the story. For instance, if Goku accidentally eats all of Bulma's special food meant for an experiment, her reaction based on her assertive nature and his reaction based on his cluelessness about the importance of the food can create a lot of drama and humor.
In this fanfic, there could be a lemon - grove that is a portal to another dimension in the Dragonball world. Bulma and Goku accidentally stumble upon it. Once inside the other dimension, they find that the laws of physics are based on lemons. For example, the more lemons you collect, the stronger you become. Goku starts collecting lemons like crazy while Bulma tries to figure out how to get back home. They also encounter lemon - based creatures that they have to either fight or befriend to progress in this strange new world.
The existing relationships in the Dragon Ball series can be a hurdle. Goku is married to Chi - Chi, and Bulma is with Vegeta. So, the writer has to find a way to make the Goku x Bulma relationship believable without completely disregarding the established pairings.
In some fanfics, there might be such out - of - character scenarios for the sake of creating drama or exploring different relationship dynamics. But in the original Dragon Ball series, this would never happen as the characters have their established relationships and personalities. Bulma is with Vegeta and Goku has his own family and relationships that are very different.
Yes, there are quite a few out there. You can start by looking on fanfic websites like FanFiction.net or Archive of Our Own. Just search for 'DBS Goku x Bulma' and you'll likely find some interesting reads.
It would be a major deviation from the original Dragon Ball lore. The characters' relationships are well - established in the official story, and such a fanfic would re - define those relationships in a very extreme way.