In this fanfiction, a great plot could be Erin turns into a werewolf and finds out that she has unique powers compared to other werewolves. Maybe she can control her transformation to some extent, which makes her both a target and a valuable asset in the werewolf world. She could be caught in the middle of a power struggle between two werewolf packs. One pack wants to use her powers for their own gain, while the other wants to protect her because they believe she is the key to a prophecy that will bring peace to the werewolf community.
One plot idea could be that Erin, after turning into a werewolf, tries to hide it from her family and friends. She struggles with the new instincts and the fear of hurting those she loves. Another idea is that she discovers there's a whole underground community of werewolves and has to learn their rules and ways to survive. Or perhaps she meets a vampire who is intrigued by her new werewolf status and they form an unlikely alliance.
Erin can start by educating herself about werewolves. She could look for old books or try to find other werewolves who can teach her. Also, she should focus on building a support system, whether it's her closest friends or other supernaturals she meets. Accepting her new identity is the first step, and she can do small things like creating a safe space for herself during the full moon.
A good plot could involve Inuyasha turning human at unexpected times. This creates a lot of chaos as his friends are used to his demon form. For instance, they might be in the middle of a battle with a powerful demon, and suddenly Inuyasha turns human. His friends then have to protect him while also trying to figure out how to turn him back. It could also be interesting if his human form has some sort of hidden power or connection that they discover during this time.
A plot could involve the male human moving to a small town where there are rumors of a female werewolf. He doesn't believe it at first, but then he has a strange encounter with her. As they interact more, he discovers that she is not as terrifying as the stories make her out to be. They start to rely on each other, and their relationship grows from there. Maybe she protects him from other supernatural threats in the town, and he helps her integrate better with the human side of the town when needed.
One idea could be that as Bill turns human, he has to deal with human emotions like love and empathy for the first time. He might struggle to understand why people cry or laugh, which could lead to some comical and also poignant moments.
One idea could be that a human accidentally stumbles upon a time - related artifact that starts the transformation process into a time baby. As a time baby, they have the ability to briefly glimpse into different time periods, which they use to prevent a great disaster in the future.
One idea could be that the male human stumbles upon the female werewolf in the forest while she is injured. He helps her, and as she heals, a bond forms between them. They have to deal with the werewolf pack's initial mistrust of the human.
One idea could be that Harry has to hide his new werewolf form from his friends at Hogwarts. He might struggle with the monthly transformations and the fear of hurting those he loves. Another could be that he discovers a way to control his werewolf side through some ancient magic that no one else has ever tried.
One idea could be that Optimus Prime turns into a human mechanic. He uses his knowledge of machinery from his days as a Cybertronian to revolutionize car repair in a small town. People are amazed by his skills and he secretly uses his new form to keep an eye out for any Decepticon threats.
One plot idea could be that Naruto is a celestial being sent to the human world on a mission. He has powers far beyond what normal ninjas possess, like the ability to control the elements on a much larger scale. For example, he could stop a natural disaster by simply willing it. Another idea is that he's a spirit in a human form, and he has to find a way to return to his spirit realm while still protecting the village. This could involve him learning about his true identity through a series of mysterious encounters.
One idea could be that the OC is a new vampire in town and Mitchell takes it upon himself to mentor the OC. They could get into all sorts of adventures, like dealing with vampire hunters together.