It could be a dark wizard who is also after the secrets hidden in the area where Harry and Daphne are training. He wants to use the power for his own evil purposes.
In this fanfiction, perhaps Harry and Daphne are led to the underground place by some mysterious clues related to Flamel. They then start their training with the help of some magical creatures or enchanted objects they find there. The training might focus on improving their combat magic and their ability to work together as a team, which will be crucial for their adventures later on.
Well, in such a fanfiction, perhaps the train could be a key to finding Flamel's hidden secrets. Maybe it has some sort of magic protection put in place by Flamel himself. It could be that the train is transporting something very important related to Flamel, like a special ingredient for his alchemy.
Yes, there could be. For example, the plot might revolve around the train being the only way to reach Flamel's hidden lair. The characters would then have to overcome various obstacles on the train to get there.
There could be an unseen force or a dark wizard manipulating Harry into enslaving Marietta and Daphne. In this case, that hidden entity would be the true antagonist while Harry is just a pawn in their evil plan.
Well, in this fanfiction, they might start to develop a new friendship on the train during their 3rd year. They could share secrets or talk about their hopes for the new school year. Daphne might be reading a really interesting book and Harry could ask her about it, starting a conversation that leads to them getting to know each other better.
Perhaps they exchange books right away. Harry shows Daphne his spell - books, and Daphne offers him one of her advanced potions books. This simple act of sharing could spark a connection between them. They might then sit together for the rest of the train ride, chatting about the upcoming school year and speculating on what new adventures and challenges await them at Hogwarts.
The main characters are Harry and Daphne, of course. Harry is a well - known character from the Harry Potter series, and Daphne is another character within the fanfiction world related to the Hogwarts environment.
There's also the possibility that it's a character who has been secretly working against Harry all along and finally resorts to the Imperius Curse to fully control him. This character could be someone who is jealous of Harry's fame or power.
A magical creature could also be an important character. Imagine a friendly house - elf that they meet. The house - elf could be in some sort of trouble, and Harry and Daphne decide to help it. This adventure with the house - elf could shape their relationship and also introduce them to different aspects of the magical world.
Daphne could be a shy and artistic girl. She might be into painting or writing, and she sees Harry as this source of inspiration. Maybe she first noticed Harry in an art gallery or a library, and that's when the crush started.