One possibility is that she could change his future for the better. She might use her knowledge of his later self to soothe his early traumas. Maybe she could prevent some of the darker events that shaped him into the Phantom we know. For example, she could try to give him a more positive musical influence early on, rather than the harsh and lonely upbringing he had.
She would likely be in shock at first, seeing the young and perhaps more vulnerable version of the man she knew as a powerful and somewhat terrifying figure. But then she might see the potential for a different path for him. Their relationship could start anew, without the baggage of the later events in the original story.
Fanfiction about them often delves into the unspoken emotions. It can show the Phantom's vulnerability more clearly. Maybe in a fanfic, he reveals his past traumas to Christine, which deepens their bond.
The Phantom might also be in awe of the new musical styles and instruments. He could be inspired to incorporate some of these new elements into his own music, creating a unique blend of his classic style and modern sounds.
The relationship can start with mystery. For example, Christine could hear the Phantom's voice in the opera house but not see him at first. Then, as she gets closer to uncovering his identity, there's a sense of both fear and attraction. This could lead to a series of meetings where they talk about music, and Christine slowly begins to see the man behind the mask, both literally and metaphorically.
Redemption is also a theme. Erik, being a complex and often misunderstood character, may seek redemption through his relationship with Christine. Fanfictions might explore how he tries to make up for his past wrongdoings, such as his threats and manipulations in the opera house.
In some fanfictions, Christine may choose the Phantom. This often leads to a bittersweet ending where they leave the opera house behind and start a new life in seclusion. The Phantom gets to have the love he has always desired, but they are constantly on the run from the outside world.
One common plot device is time travel itself. For example, the protagonist might accidentally travel back to the era when the Phantom first haunted the opera house. Another is the alteration of historical events. The character could change something in the past that has a big impact on the present in the Phantom of the Opera world. Also, the discovery of lost secrets from that time period often plays a role. Maybe the character finds a hidden diary of the Phantom that reveals his true motives and past, which then drives the rest of the fanfiction story.
Fanfiction often gives Christine more agency. In the original, she can seem a bit passive at times. But in fanfiction, like 'Christine's New Path', she might take control of her own destiny and not just be the object of the Phantom and Raoul's affections.
One interesting aspect of 'The Phantom of the Opera and Christine fanfiction' could be exploring their relationship in different historical settings. For example, what if they were in a modern - day city? The Phantom's mysterious nature might be even more pronounced against the backdrop of skyscrapers and bustling streets. Christine could be a struggling singer in a cut - throat music industry, and the Phantom could use his musical genius to help her in unexpected ways.
Raoul is Christine's childhood friend and later her suitor. He represents safety and normalcy compared to the Phantom. His love for Christine is pure, but he may not understand her as deeply as the Phantom does in some aspects of the story.
One great 'Phantom of the Opera Erik x Christine Fanfiction' is 'Shadows of the Heart'. It beautifully delves into the complex relationship between Erik and Christine. The author really captures the essence of their characters, with Christine's torn feelings between her fear and fascination for Erik.