A family - centered theme would be great. They could be shown raising their daughter Pan, dealing with the joys and challenges of parenthood. It would highlight their love not just for each other but also for their family unit.
Some fanfictions might have a theme of overcoming obstacles for their relationship. This could be external factors like villains trying to use their relationship against them, or internal factors such as Gohan's insecurities about being with Videl. The kiss then becomes a symbol of their victory over these difficulties, a moment of pure connection and affirmation of their love.
One popular theme is the exploration of Gohan's dark side in relation to Videl. For example, stories might focus on how Videl tries to bring Gohan back from his dark state. Another theme could be their relationship evolving in the face of Gohan's inner turmoil. Some fanfictions also play with the idea of them teaming up against new threats while Gohan is in his dark form.
One common theme is their relationship development. It often explores how they get closer and fall in love, like how Gohan might balance his Saiyan heritage and his life with Videl. Another theme is family. Since they end up having a family in the series, fanfictions might focus on their experiences as parents.
Another theme is family. Since they end up having a family in the original story, fanfictions usually explore how they build and protect their family together. For example, how Gohan teaches his kids about their Saiyan heritage with Videl's support.
One common theme is growth. Both Gohan and Videl are often shown growing as individuals, whether it's in their martial arts skills or in their personal relationships. For example, Gohan might become more confident in his fighting abilities, and Videl might become more understanding of Gohan's Saiyan heritage.
A common theme could be friendship. They might show how female Gohan and Videl become friends and support each other in their daily lives or in battles.
One common theme is adventure. Since Gohan has his Beast form, they might go on adventures together fighting enemies. Another theme could be romance, exploring their relationship deeper.
A very prevalent theme is the growth of their relationship. It usually begins with some sort of attraction, like Videl being intrigued by Gohan's strength and Gohan by Videl's determination. Then it develops into a deeper emotional connection. Also, the theme of overcoming differences is often there. They come from different backgrounds in the Dragon Ball world, and the fanfiction shows how they bridge those gaps.
One interesting Gohan and Videl fanfiction could be about their adventures in training their daughter Pan. It might explore how they combine their different fighting styles to teach Pan new techniques.