Well, it could start with Spiderman being transported to Diana Prince's world. His scientific knowledge from his own world could be a new aspect in her world. Diana, with her wisdom and experience, could teach Spiderman about her culture and way of life. Their powers would blend in that they could cover different aspects of combat. Spiderman's ability to sense danger could work in tandem with Diana's battle instincts.
Well, Spiderman has his web - slinging and enhanced agility, while Storm can control the weather. In the fanfiction, they could combine their powers when facing villains. For example, Spiderman could use his webs to swing around in the strong winds Storm creates, reaching enemies faster. Or Storm could create a lightning storm, and Spiderman could use his webs as conductors to direct the lightning towards the bad guys. This would make them a really powerful duo in the story.
One way could be through a powerful external force or event. Maybe a threat to all of existence that requires both Spiderman's heroism and Lady Death's connection to the afterlife to be resolved. This would force their two worlds to come together as they work towards a common goal.
One way it could happen is if there was a multiverse event. The multiverse allows for all kinds of strange combinations. Spiderman might be pulled into the Asgardian realm where he meets Sif. His heroic nature could attract Sif, and over time, they could decide to get married despite coming from very different backgrounds.
Well, one way the storyline could develop is that they might face challenges from the superhero world. Maybe some villains would try to use their relationship against them. For example, a villain could kidnap Laura to lure Spiderman into a trap. Another aspect could be how they balance their normal lives with their new married life. Spiderman has his duties to protect the city, and Laura would need to be understanding of that. They could also have adventures together, like exploring new dimensions as a couple.
The challenges would be numerous. Firstly, their powers operate on different levels. Spiderman has relatively more 'human - scale' powers compared to Diana's god - like abilities. This could lead to insecurities or over - protectiveness. Secondly, their social circles are very different. Spiderman has his friends in the city like Ned and MJ, while Diana has her Amazonian sisters. Merging these two social worlds would be no easy feat. And finally, they both have their own responsibilities in their respective worlds, and finding a balance between them while maintaining a marriage would be extremely difficult.
One possible plot could be that Spiderman and Hawkgirl meet during a multiverse - related crisis. They initially clash due to their different ways of handling things. But as they work together to save the world from a common enemy, they start to fall in love. Eventually, they decide to get married, uniting their two very different superhero worlds.
Well, perhaps in this fanfiction, Valkyrie is on a mission in New York where Spiderman is based. They cross paths when she is chasing a villain who has some sort of Asgardian relic. Spiderman helps her out. They then start to work together more often. Love blossoms slowly. For their marriage, it might be a unique blend of Asgardian and Earth - style ceremonies. Valkyrie's Asgardian friends bring their grandeur, while Spiderman's friends from the city add a touch of the urban charm.
One possible plot could be that they meet during a city - wide crisis. Spiderman is initially skeptical of Vixen's powers but soon realizes they can work well together. As they fight side by side, they start to fall in love. Eventually, they decide to get married, facing opposition from some in the superhero community who worry about the implications of their union on their crime - fighting duties.
The fanfiction could explore how they deal with their different backgrounds. Spiderman is from Queens, New York, with a normal, if somewhat difficult, family life. White Tiger has her own cultural and family traditions. Their marriage would be a blend of these two worlds. They might have a wedding that combines elements of both cultures. For example, they could have a traditional American ceremony as well as some Latin American traditions from White Tiger's side, like a special dance or a unique type of food at the reception.
One possibility is that it could start with Spiderman finally realizing his deep feelings for Black Cat. They might have a small, secret wedding to avoid attracting too much unwanted attention. Their friends from the superhero and villain world might have mixed reactions. Some would be happy for them while others might be worried about how this union could change the balance of power in the city.