Another plot could be set during his time as a Death Eater. What if he was secretly trying to undermine Voldemort from within? He could be passing information to the Order of the Phoenix without anyone in the Death Eater ranks suspecting.
One idea could be exploring Snape's childhood before Hogwarts. Maybe he had a secret friendship with a Muggle that no one knew about. This could add depth to his character and explain some of his later actions.
One idea could be that Snape discovers Hermione has a rare magical ability that he's secretly been researching. He takes her on as an apprentice of sorts, much to the surprise of everyone. This could lead to a series of adventures where they explore the depths of this magic together and Snape slowly starts to see Hermione in a new light.
Perhaps she has inherited Snape's talent for potions and is trying to prove herself in Hogwarts while also dealing with the reputation her father has. She could be bullied because of Snape's cold exterior but then show her classmates her own unique charm and skills.
One plot idea could be that Hermione gets angry at Snape for unfairly deducting points from Gryffindor. She confronts him in his office and they end up having a heated debate about fairness in the Hogwarts system. Another could be that Snape discovers Hermione is working on a dangerous magic experiment without proper authorization and she gets angry when he tries to stop her. A third idea is that Hermione overhears Snape making some snide remarks about her Muggle - born status and she angrily challenges his old - fashioned views.
One idea could be that Harry becomes a Defense Against the Dark Arts professor. He could teach students unique spells and techniques he learned from his own adventures. For example, he might introduce a class on how to combat dementors using the Patronus charm in more advanced ways. Another plot could involve Harry dealing with a student who has a connection to Voldemort, just as he did, and he has to guide the student to the right path. He could also face challenges from the school board who are skeptical of his teaching methods because of his unorthodox background.
One idea could be a story where a young trainer teams up with Professor Sycamore to research a new and mysterious Pokemon species that has been causing strange phenomena in the Kalos region. They embark on a journey filled with challenges and unexpected encounters.
One idea could be exploring Regulus Black's time as a professor and his relationships with students. Maybe he has a student who reminds him of his younger self, and he tries to guide them away from the dark path he once walked. Another could be a mystery where he has to solve a magical riddle in the school that is linked to his past secrets.
One idea could be that Harry becomes a Defense Against the Dark Arts professor. He could use his real - life experiences to teach students in a more practical way. For example, he might take students on field trips to places where dark magic has occurred and show them how to detect and counter it. Another plot could involve Harry teaching a new subject, like Muggle Studies from a wizard's perspective, sharing his insights on the Muggle world he grew up in. He could also face challenges from some traditionalist professors who don't approve of his unorthodox teaching methods.
A crossover with the Pokémon world could also be fascinating. Maybe Professor Layton and his companions find themselves in a Pokémon region. They could use their wits to solve the mystery of a rare Pokémon that has been causing trouble in the area. The Pokémon trainers would be impressed by Layton's intelligence and problem - solving skills.
One interesting idea is that a group of rogue ninjas in the Naruto world steal some of the Pokemon professor's research. They think they can use it to gain power over both the Naruto world and the Pokemon world. So, the professor teams up with some Naruto heroes to get the research back and prevent chaos from ensuing. As they work together, they learn a great deal about each other's worlds and abilities.