One popular plot theme could be an alternate universe where Gine didn't die and gets to interact more with Goku as he grows up. This could involve her teaching him about their Saiyan heritage in a more detailed way than he learned on his own. Another theme might be a romantic relationship between them, which is a very different take on the Dragon Ball universe's relationships. And a third could be Gine coming back to life and joining Goku in his battles against powerful foes, adding a mother - son dynamic to the fight scenes.
Well, in Gine x Goku fanfics, a recurring plot theme is exploration of Saiyan culture. Gine can be the key to unlocking a deeper understanding of their race for Goku. Another theme is about redemption. If in the fanfic, Gine made some choices in the past that she regrets, she tries to make up for it through her relationship with Goku. And of course, there's the theme of adventure. Gine and Goku could embark on a journey together, whether it's to discover new planets or to find other lost Saiyans.
In Gine x Goku fanfics, Gine is usually characterized as a strong - willed character. She may have been through a lot in her past as a Saiyan, but she still holds onto her values. Writers might show her as a source of comfort for Goku, someone he can turn to when he has doubts about his Saiyan identity. Also, she could be presented as a character with a lot of untapped power. Since we didn't see much of her in the original series, fanfic writers can explore her potential strength and how she uses it to help Goku.
A possible plot could involve Goku and Gine meeting in a parallel universe where the normal rules don't quite apply. They start off as strangers but quickly realize they have a lot in common. Their relationship could develop as they train together, learning from each other's fighting styles. Gine might introduce Goku to some unique Saiyan traditions that have been long forgotten, and together they become a powerful duo in this new universe.
One common theme is the exploration of their relationship in an alternate universe. Maybe in a world where Gine didn't die and they could actually meet and fall in love. Another theme could be the challenges they face as a couple, like dealing with Goku's Saiyan nature and his constant battles.
Well, a common theme is the exploration of unrequited love. Maybe Bulma has always had a secret crush on Goku, but Goku is oblivious to it. So the fanfic could be about her journey to make him realize her feelings. Also, there could be a plot where they are forced to be in a situation where they have to rely on each other completely, like being stranded on an alien planet. This would strengthen their bond and could lead to a deeper relationship.
Often, the theme of self - discovery within their relationship is present. Goku may discover new aspects of himself through his relationship with Chichi, like learning about love and commitment. Chichi, on the other hand, might discover her own strength in supporting Goku's heroic deeds and in raising their family.
One common theme could be the exploration of their relationship in a new and unexpected way. Since it's a fanfic, it might focus on how they deal with the situation of mpreg, like Goku or Vegeta adjusting to the new physical and emotional changes. Another theme could be the reactions of their friends and family to this rather strange occurrence in their world.
One idea could be that Baby Goku discovers a hidden power within himself while on an adventure with Gine. Maybe they encounter a new and strange enemy that forces Gine to teach Goku some unique skills passed down in their family.
Maybe Gine meets Goku during a time when he is facing a great internal struggle. She offers him the motherly love and guidance he never had growing up. This could lead to Goku having a new sense of purpose and inner peace, which in turn affects his relationships with his friends and family on Earth.
With Gine, her character can be developed by exploring her feelings towards Goku. She could be shown as a loving and proud mother, but also with a sense of sadness for all the years she missed with him. Her interactions with Goku could bring out her more maternal instincts, and she might start to see Goku as a symbol of hope for the Saiyan race.
One possible plot could be that Bardock and Gine somehow travel through time or dimensions to meet Goku on Earth. They could be shocked to see how strong and kind - hearted Goku has become, despite not growing up on Planet Vegeta. Goku, in turn, would be amazed to meet his parents and learn more about his Saiyan heritage from them.