Italy might be a likely candidate. He is friendly and kind - hearted. His naivete could make Anastasia feel at ease, and his love for food could be something they bond over. For example, he could introduce her to Italian cuisine, which she might find fascinating.
In some 'Hetalia meets Anastasia fanfiction', a possible plot is that the Hetalia nations are attending a diplomatic event in Russia. There, they hear rumors about Anastasia. France, being the romantic, becomes intrigued and decides to investigate. He then discovers a young woman who might be Anastasia and tries to bring her back into the spotlight, which causes a stir among the other Hetalia characters as they debate the implications of this discovery on international relations.
Anastasia could be a fictional character created specifically for this Christmas story. She might be a kind - hearted girl or a mysterious woman with a connection to the Christmas magic in the story.
One main difference is the romantic plot in the fictional Anastasia. In the real - life story, there was no such obvious romantic angle related to Anastasia's survival mystery. Also, the fictional Anastasia might be depicted with more heroic or overly dramatic traits compared to what we can assume about the real Anastasia. The real - life Anastasia was a young girl in a very difficult and tragic situation, while the fictional one is often more of a fairytale - like character for the sake of the story.
There could be some of Harry's friends who might play a role. They could be the ones who encourage Harry to meet the Queen or who give him advice on how to behave in front of her.
Well, it could be about Sonic having an encounter with Queen Aleena. Maybe they team up to face a common enemy in the fanfiction. It might also involve Sonic learning something from Queen Aleena or vice versa.
Moana would probably be very curious about Elsa's ice powers. She might ask Elsa to show her how she creates ice sculptures. Elsa, on the other hand, would be interested in Moana's fearless attitude towards the ocean. They would start by sharing their different cultures. Moana would tell Elsa about the traditions of her island and Elsa would share about the life in Arendelle.
Anastasia isn't a Japanese comic. Usually, Japanese comics have distinct artistic and narrative styles that Anastasia doesn't conform to. Also, its origin and creators are likely not from Japan.
Anastasia Knight could be a private individual or someone in a specific field like writing or art. Without additional information, it's hard to define who she is exactly. Maybe she is a new emerging talent in a particular creative area.