Another way the storylines could merge is through the exploration of different forms of power. In Dragon Ball Super, there are various forms like Super Saiyan Blue, Ultra Instinct. In High School DxD, there are Sacred Gears and Devil powers. The characters could start to experiment with combining these powers or learning from each other about how to better utilize their own powers. For instance, Vegeta might be interested in how the Devils in High School DxD use their power in a more strategic way compared to his straightforward combat style in Dragon Ball Super. This could lead to character development and new plot twists as they adapt to each other's power systems.
One interesting crossover could be the power-ups. For example, Issei from High School DxD could gain some of the Saiyan's ability to transform and increase power levels from Dragon Ball Super. This would make his battles even more epic.
Yes, there are many. You can find them on various fanfiction websites. Some might focus on crossovers between the two universes, like having characters from Dragon Ball attend the high school in DxD. Others could explore unique power combinations or relationships between the characters from both series.
One common theme is power - up. Combining the power - up mechanics from Dragon Ball with the devil - related power growth in High School DxD. Another theme is friendship, as characters from both series form new bonds.
One interesting storyline could be about a new student at Dragon Ball High School who has a hidden power. They struggle to fit in at first but then end up using their power to save the school from a mysterious threat.
Gohan's super strength would make him a force to be reckoned with. He could easily overpower most of the regular characters in High School DxD. His ki blasts could also be a new form of attack that the others in the universe have never seen before.
Typically, they use some sort of magical or dimensional rift to merge the two worlds. For example, Naruto could be sucked into a portal that leads him to the High School DxD universe. Or, it could be a more complex plot device like a powerful villain trying to combine the two worlds for their own gain.
A possible storyline is the characters forming a high school club related to martial arts or self - defense. They could teach other students and at the same time learn more about human relationships and teamwork. This would be a great way to see how they adapt to normal high school life while still having their unique powers and abilities.
You can try some popular fanfiction websites like FanFiction.net or Archive of Our Own (AO3). They usually have a large collection of fanfictions including those related to Dragon Ball Z and High School DxD.
One interesting story could be the ones where the characters from Dragon Ball Z end up in the High School DxD universe and have to adapt to its rules. For example, Goku trying to understand the whole devil - angel - human dynamic in the High School DxD world would be quite fascinating.
One interesting storyline could be a new character created by a gamer who has unique abilities that even the Saiyans are envious of. This character might enter the Dragon Ball Super universe and start competing in the tournaments, creating new rivalries and alliances.