One interesting concept could be alternate versions of Hogwarts. For example, a Hogwarts where the houses have different characteristics or where the magic taught is more focused on a particular type of magic like dark magic being taught openly (in a more morally grey fanfic). Another concept might be different fates for the main characters. Harry could be a Slytherin instead of a Gryffindor, which would lead to a completely different story arc. There could also be crossovers with other fictional universes in the multiversal fanfiction, like Harry Potter characters interacting with characters from Lord of the Rings or Star Wars.
It expands the story by introducing countless alternate realities. For instance, we might see a world where Voldemort won and how the remaining characters survive and resist under his rule. This creates a whole new set of storylines and character arcs. It also allows for the exploration of different character relationships. Characters who were enemies in the original might be friends in a multiversal fanfic, like Harry and Draco.
Such a concept is quite problematic. It can send the wrong message and may be uncomfortable or disturbing for many. Cartoon content should typically focus on positive and educational elements rather than such questionable scenarios.
The 'Cinderella Closet' manga tells the tale of a young woman who stumbles upon a mysterious closet that grants her wishes related to fashion and personal growth. It's full of enchanting moments and unexpected adventures.
Well, you might have luck on dedicated graphic design platforms like Canva or Freepik. These sites frequently offer black and white flower template cartoons for free or for purchase. Also, don't forget to check out some stock photo websites, they could have what you're looking for.