A great One Jump Man fanfiction often has a well - developed plot. It should take the existing world and characters of One Jump Man and expand on them in an interesting way. For example, it could introduce new challenges for the main character.
You can try fanfiction websites like Archive of Our Own (AO3). There are often a lot of great One Jump Man fanfictions there. Writers share their creative works, and you can search by tags related to the story elements you like.
It's highly unlikely. Jumping from 40 stories is an extremely long fall, and the impact at the bottom would be so great that it would be almost impossible to survive.
First, choose the two or more Shonen Jump series you want to cross over. For example, if you pick 'Fullmetal Alchemist' and 'Black Clover'. Then, think about how the worlds and characters would interact. Maybe the alchemists from 'Fullmetal Alchemist' could visit the Clover Kingdom in 'Black Clover' and be amazed by the magic there. Next, plan out a basic plot. It could start with a problem that only the combined forces of both series' characters can solve, like a powerful dark magic that the alchemists need to understand and the mages need their scientific knowledge to defeat.
No way! A two-story house is way too high to jump from. It's against common sense and safety regulations. Even if you think you can, it's a bad idea with potentially life-threatening consequences.
No, they aren't the same. Jump Comics is a broader category that may include various types of comics, while Shonen Jump specifically focuses on comics targeted at young male readers.
It depends on a lot of factors. Generally, jumping from one or two stories might be somewhat safe if you land properly, but it's still very risky and not recommended.