In a fanfiction, Sora could arrive in the Dragon Ball world by accident. He's used to traveling between different worlds in Kingdom Hearts, and somehow he ends up in the Dragon Ball universe. At first, he's completely out of his element, but he quickly adapts. His positive attitude and unwavering belief in the power of friendship could inspire the Dragon Ball characters. They might start to value the bonds between them more, like Sora does in Kingdom Hearts. And his fighting style, which combines acrobatics and Keyblade attacks, would be a fresh addition to the battles in Dragon Ball.
Well, one idea could be that Sora's Keyblade skills would be a huge asset in the Dragon Ball universe. He could use it to block energy blasts from the likes of Frieza or Cell. Maybe he'd team up with Goku and teach him some new combat techniques that involve the use of the Keyblade's unique abilities.
Sora's Keyblade skills would be very useful in the My Little Pony world. He could use it to fight off any physical threats, like monsters or villains. For instance, if there were some sort of dark creatures attacking the ponies, Sora could easily dispatch them with his combat abilities.
Well, it depends on how you look at it. Technically, in official Kingdom Hearts content, Sora is a key character. But in the realm of fanfiction, many writers take the essence of Sora and create their own unique stories that are not part of the official canon but are still inspired by the Kingdom Hearts universe. So, in that sense, he can be considered as a major element in Kingdom Hearts fanfiction.
Perhaps Sora's keyblade has some strange reaction in the Dragon Maid world. It could start to glow differently or even change shape when he encounters certain magical elements in this new world. He then has to figure out why this is happening while also getting used to the unique customs and characters in the Dragon Maid world, like Kobayashi's daily life with the dragons.
Sora would probably be a very powerful addition to Fairy Tail. His skills with the Keyblade could be used in interesting ways against the various dark forces in the Fairy Tail world. He might form strong friendships with the guild members, like he did in his own world, and share his stories of different worlds he has visited.
Their interaction would likely be a bit cautious at first. Sora might be in awe of Aqua as she is an experienced Keyblade wielder. Aqua would probably be a bit guarded but also curious about Sora.
Sora's abilities from Kingdom Hearts would bring a unique dynamic to the Fairy Tail world. His Keyblade skills could be used in combat against the various dark forces and powerful foes in Fairy Tail. For example, his ability to lock and unlock different worlds could potentially lead to new storylines involving other dimensions within the Fairy Tail universe. Also, his high mobility and acrobatic fighting style would make him a formidable ally or a challenging opponent for the Fairy Tail mages.
A fanfiction about Sora getting abused could also introduce new relationships. For example, if he is being abused by a group, there could be a character who comes to his rescue and forms a strong bond with him. This new relationship could then play an important role in future events in the fanfiction, either helping Sora get revenge or helping him heal from the abuse.
They are often portrayed as two souls with a deep connection. Sora is usually the more positive and heroic one, while Roxas has his own kind of edginess. Fanfictions might show them learning from each other.
First, you need to understand the lore of both series well. Know the rules of magic in Kingdom Hearts and the power levels in Dragon Ball Z. Then, create an interesting plot that combines elements from both. For example, a plot where the Heartless invade the Dragon Ball Z world.