One possible fanfiction could be about Spiderman and Black Cat teaming up to fight a new villain in the Web of Shadows. Maybe they have to overcome their own relationship issues while saving the city.
A fanfiction could focus on Black Cat's backstory within the Web of Shadows context. Maybe she has a secret past connection to the symbiotes that is slowly revealed as she battles against them. This would add depth to her character and her role in the story.
A plotline could be that the Web of Shadows starts to corrupt Black Cat, and Spiderman has to find a way to save her without hurting her. He might have to seek help from other superheroes or use some rare technology.
A plot could be that Black Cat gets infected by a different kind of symbiote that gives her new powers. She has to learn to control these powers while also dealing with the fact that Spider - Man is a bit suspicious of her new abilities.
In the context of Spider - Man: Web of Shadows' evil ending fanfiction, one interesting aspect could be the character development. If Spider - Man goes down the evil path, how do the other characters react? For example, Mary Jane might be horrified and try to bring him back to the good side. Also, villains might either team up with this new, evil Spider - Man or see him as a threat to their own plans.
I'm not sure exactly as I haven't read it thoroughly. But generally, it might be about a character's journey to become a powerful entity while remaining in the shadows. It could involve things like secret powers, hidden agendas, and a world full of mystery.
I'm not sure which specific 'black cat black cat story' you mean. There are many stories involving black cats in different cultures. In some superstitions, black cats are considered unlucky, while in others they are symbols of mystery or magic.
One of the main themes is self - discovery. The protagonist, who tries to be in the shadows, gradually learns more about his own abilities and identity. Another theme is the concept of power, how it can be obtained and used in different ways in the fictional world of the web novel.