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.
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.
One idea could be France taking on the role of a mentor to baby Canada. He could teach Canada about art, cooking, and the French language. Another plot could involve France trying to protect baby Canada from the chaos of the Hetalia world. Maybe some other countries misunderstand Canada's relationship with France and France has to clear things up.
A more adventurous plot could be that Jack Frost, now human, discovers he has a special mission. Maybe there's a new threat to the winter world that only he, with his unique knowledge as a former winter spirit, can stop. But he has to rely on his new human skills and the help of his human friends to succeed.
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.
One idea could be that the OC is a new diplomat in Italy. Italy shows the OC around his beautiful country, from the ancient ruins in Rome to the vineyards in Tuscany. Along the way, they face challenges like cultural misunderstandings but also share many humorous and heartwarming moments.
One possible plotline could be Canada finally getting noticed during an international event. For example, at a G8 summit, he presents an amazing plan for environmental conservation that catches everyone's attention. His usually overlooked ideas suddenly become the center of discussion, and countries like America are surprised that Canada has been hiding such great thoughts.
He would probably be very polite. Canada is often depicted as a polite nation, and this would likely carry over to his human form. He might be a bit shy, too, since he sometimes gets overlooked in the Hetalia series. Also, he would be very knowledgeable about nature and the outdoors, given Canada's vast and beautiful landscapes.
One interesting plot idea could be Scotland taking on the role of a protective older brother figure. He could be teaching baby England about their shared heritage, like the unique landscapes and traditions. For example, showing him the ancient castles and explaining the stories behind them.
One idea could be that the countries from Hetalia are somehow transported into the Naruto world. For example, Italy could end up in Konoha and his carefree attitude might amuse or annoy the ninja there. Maybe he gets involved in a mission by accident and his unique skills from being a nation, like his knowledge of different cultures and languages, could come in handy. Another plot could involve Naruto being sent to the Hetalia world and having to deal with international relations in a very different way than he's used to in the ninja world. He might try to use his ninja way to promote peace between the nations there.
One interesting plot idea could be the characters from Hetalia encountering the creepy and often disturbing entities from Creepypasta in a haunted location. For example, Italy might stumble upon Slenderman in a dark forest. Another could be the Hetalia characters being trapped in a Creepypasta - inspired nightmare world where they have to face their worst fears, like Germany facing a horde of Jeff the Killer - like beings. And perhaps the Hetalia nations could be forced to team up with some of the less - malevolent Creepypasta characters to escape a shared threat.