Perhaps the fem Harry Potter is raised in Hogwarts without knowing her true father. But when she accidentally casts a spell that reveals her connection to the Joker, she is sent on a journey to Gotham. There, she discovers a whole new world full of crime and corruption. She tries to bring some of the magic - based solutions she learned at Hogwarts to Gotham, like using spells to clean up the slums or protect the innocent. Meanwhile, she has to deal with the Joker's attempts to draw her into his world of madness.
One possible plotline could be that Harry, after some dark magic influence or a strange accident, starts to show Joker - like behavior at Hogwarts. He might play cruel pranks on his classmates and teachers, using his magic in unexpected and unethical ways.
One possible plotline could be that Harry, as a female, discovers her true heritage as the predator's daughter and has to struggle with hiding this fact from her friends at Hogwarts. She might be afraid of how they'll react if they find out she's part - alien.
One possible plotline could be that Fem Harry discovers her true heritage as Celestia's daughter and has to learn to control newfound magical powers related to Celestia's realm. Maybe she has to travel between the Harry Potter world and the world of Celestia to prevent some sort of catastrophe that threatens both worlds.
One plotline could be Fem Harry trying to keep her magical abilities a secret in the Pokemon world while also trying to fit in as Ash's daughter. Another could be her using her magic to help Ash in a particularly difficult Pokemon battle. Maybe she uses a spell to make a Pokemon stronger or to break an opponent's tricky move.
One possible plotline could be Fem Harry struggling to hide her true identity in the wizarding world. Since she's Lucifer's daughter, she might have unique powers that set her apart and draw unwanted attention. Another could be her journey to understand her father's nature and the implications of being related to him. Maybe she has to deal with characters from the underworld trying to influence or use her for their own purposes.
One possible plotline could be that fem Harry Potter discovers her new power as a jinchuuriki and has to hide it from the wizarding world which is not familiar with such powers. She might struggle to control the beast within her while also dealing with the usual Hogwarts drama.
One possible plotline could be that the fem Harry Potter, with her Kryptonian powers, tries to hide her dual identity in the wizarding world. Maybe she has to constantly keep her super - strength and other powers in check while at Hogwarts.
In this fanfiction concept, it could start with a time - travel or dimension - hopping scenario. The fem Harry Potter could be sent to an alternate universe where she is the Joker's daughter. Her magic skills would be a huge contrast to the Joker's madness. She might use her magic to try and reform Gotham in her own way, while also dealing with her new - found, rather strange family connection.
One possible plotline could be that Harry, as a female, somehow gets transported to Dracula's world. Maybe through a magical accident or a dark spell. And then Dracula, seeing her unique magic, becomes intrigued and decides to make her his bride. Another could be that there is a prophecy in the Harry Potter world that links her to Dracula in some way, and she has to navigate this new and dangerous situation.
One possible plotline could be that through some magical accident or portal, Harry Potter (as a female in this fanfiction) ends up in the Naruto world. There, she meets Kakashi and they start off as friends but gradually fall in love. Another could be that both worlds somehow merge, and Kakashi and fem Harry are brought together due to their shared sense of duty and protectiveness over their respective worlds.