Well, it could be a story where Canada turns into a girl due to some magical or mysterious event. As a girl, she discovers new aspects of her personality. She might become more assertive or more in touch with her emotions. And in terms of her relationships with the other Hetalia characters, she could form new friendships or rivalries. For instance, she might have a rivalry with France who is always a bit of a flirt and now sees her as a new target for his charm.
Well, perhaps in the fanfiction, Canada turns into a baby due to some magical mishap. The nations have to search for a way to turn him back. Meanwhile, baby Canada is just exploring the world around him innocently. He might crawl over to England's tea set and accidentally break a cup, leading to England's typical over - reaction.
A possible plot is that Canada, now human, decides to go on a journey across his own land to see how much it has changed and how different it is from his memories as a nation. Along the way, he meets various people who unknowingly are descendants of those who were part of Canada's history. He could also encounter challenges like trying to prove his identity to those who are skeptical of his claims of being the nation Canada in human form. He might use his unique knowledge of the land and its past to overcome these difficulties.
A great plotline could be England turning into a girl and then trying to prove that she is still as capable as before. She could participate in a series of challenges or competitions among the nations, like a cooking competition. Since she has a long history of certain culinary traditions, she wants to show that her gender change doesn't affect her skills. Meanwhile, her relationships with her old rivals like Spain could also take on a new dimension. They might be more hesitant to be as aggressive in their rivalries as they were before.
It might be about Canada in the Hetalia universe going through a sudden change, like snapping. Fanfictions in the Hetalia fandom often take the existing personalities of the characters and push them in new directions. So this could be about Canada breaking free from his usual shy and reserved self and doing something unexpected, perhaps standing up to the more dominant nations in a bold way.
One possible plot could be that Pikachu, after being exposed to a strange form of energy in the Pokémon world, transforms into a girl. She then has to deal with the confusion of her new form while still having her Pikachu memories. She might struggle to fit into the Pokémon society in this new body, but also discovers new abilities or a deeper connection to certain types of Pokémon that she didn't have before.
In a fanfiction about Albedo turning into a girl, the story could begin with Albedo's research into some ancient alchemy. By accident, a reaction occurs that changes his gender. At first, he is horrified and tries to reverse it immediately. But as time passes, he starts to explore what it means to be a girl. He could make new friends among the female population in Mondstadt who help him understand the female perspective. His relationships with his old friends might also change. For example, some might become more protective, while others might be a bit distant at first, until they get used to the new Albedo.
Well, one possible plot could be that Prussia, now as a girl, has to navigate the world of international relations in a different way. Maybe other countries would react with shock at first and then gradually get used to this new Prussia. She might also have to deal with new emotions and how to present herself in a more feminine way while still maintaining her Prussian pride.
Well, one possible plot could be that Italy's transformation into a girl causes chaos among the other nations at first. They are all used to his male self. But as time goes by, they start to see the new 'her' in a different light. Maybe 'she' brings a new perspective to diplomatic meetings or cultural exchanges. For example, the way 'she' approaches cooking and art might change a bit, adding a feminine touch to things that were previously more masculine in the eyes of the other nations.
One possible plot twist could be that Kakashi, as a girl, has to deal with different social expectations in the ninja world. For example, she might face more restrictions in combat training because of her new gender. Another could be that she uses her new form to her advantage in undercover missions, fooling enemies who are less likely to suspect a female. Also, there could be a romantic plot twist where a character who previously saw Kakashi as a rival now has different feelings for her as a girl.
Well, the plot could involve Sonic turning into a girl due to a magical curse. In this fanfiction, Sonic as a girl might struggle with the different social expectations in her world. For example, some characters might treat her differently just because she's female. However, she still retains her brave and adventurous spirit. She might team up with some female characters in the Sonic universe who help her understand and adapt to her new form. And of course, she'll still be out there fighting Dr. Eggman, but now with a new perspective and maybe some new combat moves that come with the female form.