Perhaps there's a plot where an alien symbiote attaches itself to Mary Jane instead of Peter. She starts to develop strange powers and a more aggressive personality. Peter has to figure out how to save her from the symbiote's control. This would put a strain on their relationship as Mary Jane struggles with the new - found power and Peter tries to be the hero she needs.
A great plot idea would be Mary Jane being kidnapped by one of Spider - Man's enemies who wants to use her as bait. Peter has to use all his skills and intelligence to rescue her without revealing his identity to the kidnapper. Also, Mary Jane could start training in self - defense secretly and ends up helping Spider - Man during a fight without him knowing it was her at first.
One idea could be Ava and Peter teaming up to face a new super - villain in the city. Maybe this villain has the ability to manipulate time, and Ava's powers along with Peter's Spider - Man skills are needed to stop the chaos. Another plot could be a story where Ava and Peter get transported to an alternate dimension and have to find their way back while dealing with the different versions of their friends and foes there.
One idea could be Mary Jane starting her own investigative journalism project related to Spider - Man's enemies. This would put her in danger and force Spider - Man to protect her while also trying to keep his identity a secret from her new inquiries.
One plot idea could be Peter and Mary Jane going on a double - date with another superhero couple. It would be interesting to see how they interact in a more normal social setting while still having their superhero identities in the background. Another idea is a story where Mary Jane gets some of Spider - Man's powers temporarily. This could lead to her having to learn how to use them quickly while Peter tries to help her. A third idea could be a time - travel story where they go back to the early days of Peter becoming Spider - Man and Mary Jane first getting interested in him, and they have to relive those moments with their current knowledge and relationship status.
A plot could involve a school competition where both Flash and Peter are competing. Flash is overconfident, while Peter is underestimated. However, Peter uses his smarts and Spider - Man - like agility (in a non - obvious way) to start winning. Flash gets jealous at first but then realizes that he can learn from Peter. This leads to a series of interactions where they learn to respect and support each other, and their relationship evolves from antagonistic to friendly.
One idea could be Mary Jane discovers Spider - Girl's secret identity by accident and they team up to take on a new villain in town. Maybe a villain who can manipulate emotions, and Mary Jane uses her acting skills to help Spider - Girl deceive the villain.
One interesting plot idea could be Spider - Man teaming up with unexpected heroes from other universes. For example, he might work with a magical hero to fight a villain who has the ability to manipulate time. This would create a really cool dynamic as they combine their different skills and powers.
They could go on a trip outside of New York in a fanfiction. Away from the chaos of the city and the superhero duties. Just a simple, romantic getaway where they get to know each other better without the distractions. It would be a chance for them to have some normalcy in their relationship.
One great fanfiction could be about Peter and Mary Jane's date night in the city. They could be swinging through the skyscrapers together, with Peter showing Mary Jane his favorite spots from above. It would be a sweet and adventurous story, highlighting their relationship in the world of Spider Man PS4.
A unique way to develop their relationship is to have Peter lose his powers for a while. Mary Jane then has to step up and be the protector in some situations. This role reversal would make them see each other in a new light. She could use her wits and charm to get them out of trouble, and Peter would learn to rely on her in a different way. It would strengthen their bond and show that their relationship is not just based on Peter being the hero.