This is a story set in Parallel Universe No. 114514.
Nine years after returning to New York, Harry Osborn, Hogwarts' most talented student in its history and the apprentice of the Sorcerer Supreme, discovers that his father Norman has found him a fiancée, Gwen Stacy, who turns out to be Spider-Man. Mary Jane Watson has also started slinging webs after becoming an agent for the Anti-Venom Serum, and his adopted sister Penny Parker has even built a Spider robot?
Harry turns to look at his subordinates: Electro, Vulture, Doctor Octopus, Sandman, Hydro-Man...
Why do you all look so much like villains?
PS: The original title was My Spider-Man Girlfriend