One idea could be that She - Venom has a unique connection to Spider - Man's spider - sense. Maybe her symbiotic abilities interfere with it in unexpected ways, leading to some comical or dangerous situations as Spider - Man tries to adapt. Another could be a story where She - Venom and Spider - Man have to team up to stop a new super - villain who is immune to the regular attacks of both of them, forcing them to combine their powers in creative ways.
One idea could be that Venom and Spider - Man are forced to team up against a new symbiote villain that is far more powerful and malevolent. This new symbiote could be controlling innocent people, and Spider - Man and Venom have to find a way to stop it without harming the hosts.
In a Venom x Spiderman fanfiction, a plot could involve Venom and Spiderman having to work together to stop a symbiote invasion from another dimension. The symbiotes from this other dimension are more aggressive and have different abilities. Spiderman has to use his intelligence and web - slinging skills, while Venom uses his brute strength and symbiotic powers. Along the way, they could start to understand each other better, and Venom could learn some of Spiderman's sense of responsibility. This would be a great opportunity for character development for both of them.
One idea could be exploring how the relationship between Spiderman and Venom changes during the pregnancy. Maybe they become more protective of each other.
Perhaps there could be a story where Agent Venom is framed for a crime he didn't commit, and Spiderman is the only one who believes in his innocence. They then go on a journey to clear Agent Venom's name while also uncovering a bigger conspiracy in the city. Along the way, they have to fight off other villains who are after them.
One plot idea could be that the female Venom has a split personality. One side is attracted to Spiderman, while the other side is a more menacing villain. This creates an internal struggle within her as she interacts with Spiderman. Another idea is that she and Spiderman have to team up against a common enemy, like a new symbiote that is causing chaos in the city. As they work together, they start to understand each other more and a romantic tension builds.
One idea could be a story where Spiderman has to team up with his greatest enemies to fight a new, more powerful threat from outer space. This would force him to put aside his differences and find common ground with the likes of Doctor Octopus and Green Goblin.
One idea could be that the chubby Spiderman has a hard time swinging between buildings due to his extra weight, so he has to come up with new ways to move around the city. Maybe he invents some sort of web - enhanced jetpack. Another plot could involve him being bullied because of his appearance, but then he uses his intelligence and superpowers to prove his worth. For example, he could solve a big scientific mystery that even the smartest minds in the city couldn't crack.
Maybe a plot where Spider - Man has to face a new villain who has the power to manipulate time. This would make for some really interesting battles and strategic thinking on Spider - Man's part. He would have to find a way to defeat the villain without getting caught in the time - warping chaos. Also, a story about Spider - Man traveling to an alternate dimension where his powers work differently could be cool.
The dynamic between Spiderman and Venom makes a fanfic interesting. Their opposing natures - one a hero, the other an anti - hero or villain - create a lot of tension and potential for great storylines.
One idea could be that Black Cat steals a valuable item, and Spiderman has to track her down. But when he finds her, they discover a bigger threat together and have to team up to stop it.