Maybe Harry has to find an alternative way to get to school. He could use magic to apparate or fly on a broomstick.
Well, in this fanfiction, it could be that Harry misses the train due to a prank played on him by some of his classmates. He then has to face a series of challenges as he tries to make his way to Hogwarts on his own. This could include dealing with dark creatures and using his wits and magic skills to overcome obstacles. It could also lead to him growing as a wizard and learning more about his own abilities outside the normal school routine.
Maybe he has to find an alternative way to get to school. He could try to use magic to create a makeshift transportation or ask for help from his friends' families who might be passing by.
Hermione might help him. She's always resourceful and would probably come up with a clever plan to get Harry to Hogwarts.
In a 'Harry missed the train' fanfiction, he might have to find an alternative way to get to Hogwarts. Maybe he'll use magic that he's not supposed to use yet, like apparating. This could lead to all sorts of adventures and getting into trouble with the Ministry of Magic.
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.
His friend Ron could come back to help him. Ron is always loyal and might not want to leave Harry behind. He could bring his family's flying car again to pick up Harry.
In a fanfiction about the Harry Potter train being alone, perhaps it could become a magical entity on its own. It might start to travel to mysterious destinations not on the regular Hogwarts route. Maybe it would pick up lost magical creatures or even lost wizards from different eras. It could be a place of refuge for those in need, with its compartments transforming into mini - magical habitats.
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.
During the training, Hinata might become more confident. Naruto's positive and energetic attitude could inspire her. For example, he could encourage her to be more assertive in her attacks. And Naruto could also benefit. Hinata's calm and observant nature might help him to be more patient and strategic in his fighting style.
One possibility in this fanfiction is that Naruto's training with the Kyuubi helps him to better understand the nature of chakra itself. He could discover new ways to combine his own chakra with that of the Kyuubi, creating a unique and extremely powerful form of energy. This new form of chakra could give him an edge in future battles against powerful enemies. Also, his time training might be filled with various challenges and trials set by the Kyuubi, which would test his resolve and determination, making him an even stronger ninja in the end.