Well, perhaps Natsu turned into a girl could lead to a story where she has to go undercover as a female in an all - female magic group. This would force her to learn about the different culture and magic techniques of women - only groups. Or maybe she gets involved in a beauty contest in the magical world by accident, and her friends from the guild have to help her out while she's in this new form.
One idea could be that they discover their pregnancy during an important mission. This would add a layer of complexity as they have to balance their new situation with their duties. They might have to face the reactions of their friends in the guild, some being overjoyed and others worried. Another plot could involve them preparing for the baby's arrival, like Natsu trying to build a nursery with his unique brand of enthusiasm but making comical mistakes along the way.
One idea could be that they discover the pregnancy during a big battle. The news gives them extra motivation to protect their world and each other. They start to prepare for the baby's arrival while still dealing with the threats around them.
One plot idea could be that Naruto is turned into a monster during a powerful and dark jutsu gone wrong in a battle. He then has to struggle with his new form while his friends initially fear him but later try to find a way to turn him back. Another could be that an ancient curse is placed on him, turning him into a monster, and as a result, he has to go on a journey to find the source of the curse to break it.
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 Superboy is hit by a strange alien device that changes his gender. He then has to deal with the new physical limitations and social expectations while still trying to be a hero. For example, he might struggle with the different way people treat him as a girl and how to use his powers in a more feminine body.
One plot idea could be that Link, as a girl, has to hide her true identity in a world that doesn't expect a female hero. She could face challenges like being underestimated at first but then prove herself in battles. Another could be that she forms unique relationships with the other characters, like a different kind of friendship with Zelda. Maybe she also has to deal with newfound emotions and how they affect her heroic duties.
One plot idea could be that the crossdresser, after being turned into a girl, has to navigate a new social life. For example, they might struggle to fit in with the girls at school or work. Another idea is that they discover new aspects of themselves, like different fashion tastes or hobbies that they didn't explore before. They could also face challenges in their relationships. Maybe their friends don't recognize them at first and they have to re - establish those friendships.
In this fanfiction, perhaps Dipper getting turned into a girl is part of a curse. The curse was placed by an ancient being that Dipper accidentally awakened. As a girl, Dipper finds that she has a stronger connection to the nature in Gravity Falls. She can communicate with animals in a different way and understand the plants better. This new connection helps her in her quest to break the curse. However, she also has to face the fact that some of the boys in town, who used to be her friends or acquaintances, now act differently around her. It's a whole new world for her to explore and understand.
A possible plot is that Ron - turned - girl gets involved in a magical beauty pageant that has some dark secrets behind it. She enters it thinking it's just a bit of fun but soon realizes there's more at stake. This could lead to her using her typical Ron - like courage and quick thinking to expose the secrets. Additionally, her romantic interests might shift. Instead of pining after Hermione in the same way, she could develop feelings for a different character, perhaps someone from another house who is intrigued by this new version of Ron.
Well, a great plot development could be Shirou's self - discovery. When turned into a girl, he might start to understand the female experience more deeply. He could find himself interested in things he never considered before, like certain types of fashion or hobbies typically associated with girls. This newfound self - awareness could also lead to changes in his relationships. He might become closer to the female characters as he can now relate to them on a different level.