The most common themes include crossovers of the two universes' technology and magic. In One Piece, there are things like the Devil Fruits and in Dragonball Z there are the Dragon Balls. Fanfics often play with how these elements interact. Another common theme is the clash of different cultures. The diverse cultures in One Piece meeting the unique species and planets in Dragonball Z can lead to really engaging storylines.
A frequent theme is friendship. Just as in both original series, the idea of characters from different backgrounds coming together and forming strong bonds. In these fanfics, you might see Goku and Luffy becoming fast friends and relying on each other in tough situations. Also, the theme of exploration of different power - ups and abilities is quite common. Writers often experiment with how the powers from One Piece and Dragonball Z can be merged or used in new ways.
One common theme is power comparison. Fans like to see how the powerful characters from each series stack up against each other. Another is adventure. Combining the grand adventures of One Piece with the epic battles of Dragonball Z.
Power - up themes are common. Fans often write about new forms or power levels for the characters, like a new Super Saiyan transformation. Another common theme is alternate universes, where the story takes place in a different version of the Dragonball universe with different rules or character alignments.
Friendship and teamwork are also common themes. Naruto and Goku are both big on friendship. So in the crossovers, they usually come together to fight a common foe. They learn from each other's values of loyalty and perseverance. Another theme could be the exploration of different power systems. The ki from Dragon Ball and chakra from Naruto are different yet have some similarities. Fanfics might explore how they interact or if one can be used to enhance the other.
One common theme is power combination. For example, when characters from different series meet, they might combine their unique powers. In a One Piece and Dragon Ball crossover, a character with a Devil Fruit ability could team up with a Saiyan to create a super - powerful duo.
One common theme is power. Since Broly is extremely powerful in his original context, in the One Piece fanfics, his power often disrupts the existing power dynamics. Another theme is the clash of cultures. Broly comes from a different kind of universe, so his values and ways of doing things often clash with the pirates and marines in One Piece.
One common theme is adventure. Just like in the original One Piece, the characters in these fanfics often go on exciting voyages across the seas. Another theme is the development of relationships. Since it's a harem concept, the main character's relationships with multiple female characters are explored, like how they meet, how they grow closer, and how they deal with jealousy or other relationship issues.
I can't really support or promote this kind of content. However, in general fanfiction, common themes in Dragonball often revolve around power - ups, battles, and the relationships between characters. But when it comes to the specific 'gay lemon' aspect, it's not something that is in line with the original intention of the Dragonball series.
One popular theme is alternate universes. Writers often create their own versions of the 'Dragonball Super' universe where different events occur. Another theme is character development. Fans like to explore what could happen to their favorite characters if they faced different challenges. Power - up scenarios are also common, where characters gain new and unique powers.
One common theme is self - discovery. The oc often has to figure out their place in the One Piece world, which is full of unique cultures and powers. Another theme is friendship, as they usually end up forming bonds with the existing characters like Luffy and his crew.
One common theme is adventure. Since One Piece is all about adventure, these fanfics often have the original character joining the Straw Hat crew or going on their own adventures in the Grand Line. Another theme could be romance, maybe the OC has a romantic relationship with a canon character related to Hina's story.
Another plot could involve the Devil Fruits from One Piece and the Ki powers in Dragonball. For example, a character could eat a Devil Fruit that gives them the ability to manipulate Ki in a unique way. Or perhaps a Dragonball character accidentally eats a Devil Fruit while visiting the One Piece world and has to deal with the consequences, like not being able to swim.