Perhaps a fanfiction where Vados senses a new threat approaching the universe. She enlists Goku to help her find a way to stop it. Along the way, they encounter strange new races and powers. Goku's simple but powerful approach to fighting combined with Vados' wisdom would make for an interesting dynamic as they search for a solution to this impending doom.
A fanfiction could involve Vados taking Goku on a journey through different timelines to show him the consequences of his actions. Goku would see alternate versions of himself and his friends. This experience could make him more cautious and strategic in his battles back in his own timeline. Vados would be like a guide, teaching Goku about the importance of balance and how his power affects the multiverse.
Friendship is also a common theme. Despite coming from different worlds, Naruto and Vados in these fanfics usually form some kind of bond. They learn from each other and support one another through various challenges, whether it's fighting a common enemy or just understanding each other's cultures.
One interesting concept could be the power dynamics. Since Black Goku is a powerful and often malevolent version of Goku, exploring how their powers interact in a fanfiction can be exciting. For example, they might have an epic battle where their similar yet different fighting styles clash.
Character development is also crucial. In many such fanfictions, Female Goku Black may start as a villainous or at least antagonistic character. But as the story unfolds, she might change due to her interactions with Goku. This transformation can be really interesting to follow. For example, she could start to question her own motives or even develop feelings for Goku, which is a big shift from her initial stance.
One idea could be that Goku and Goku Black are forced to team up against an even greater threat from another universe. They start to understand each other's fighting styles during the battle and gradually develop a grudging respect for one another.
The theme of love against all odds is also quite prevalent. Given their different origins and the fact that Goku is already married in the original story, their relationship in fanfics has to overcome many obstacles. This could be social, moral or even physical (like dealing with other powerful characters who oppose their union), but they still find a way to be together, which makes for an interesting read.
There's a fanfic called 'The Meeting of Naruto and Vados'. This one delves into how Naruto, with his ninja skills, and Vados, with her angelic abilities, interact. It's really interesting as it shows Naruto being in awe of Vados' power at first and then gradually learning from her. They end up having a great friendship and going on various adventures together.
Well, one possible plot could be a training arc where Goku helps Caulifla and Kale to master new forms. They could travel to different planets for special training. Goku could share his Saiyan knowledge with them, and together they face off against new powerful enemies.
Another theme is power transfer or inheritance. Some fanfics might have Bardock passing on some hidden power or knowledge to Goku. This could be related to their Saiyan abilities or some special technique that only their family line can access. There is also the theme of redemption in some cases. If Bardock is brought back in a fanfic, he may seek to atone for his past actions through his relationship with Goku.