It could be about many things. Maybe it's a story where something unexpected, like a new vampire power or a sudden event in the Twilight universe, shakes up the normal order of things. For example, a new vampire could arrive in Forks with a power that no one has seen before, and this causes a shock to the relationships and power dynamics in the story.
It's hard to say without reading it, but it could be Bella and Edward. Maybe something happens that throws their relationship into chaos, like a threat from an unknown vampire that forces them to reevaluate their love and safety.
One popular Twilight system fanfiction might be those that explore different pairings than in the original. For example, stories where a minor character gets a more prominent role in the vampire - human - werewolf world. Another could be ones that change the setting slightly, like placing the story in a different time period within the Twilight universe.
First, re - read the Twilight books to really get a feel for the world, its rules, and the characters. Then, come up with an interesting concept. It could be as simple as a 'what if' scenario, like what if Bella had a different power. Next, start creating your own characters or expanding on existing minor ones.
I don't know of any information about the novel where the female protagonist transmigrated to Twilight City. However, if you have any other questions, I will try my best to answer them.
Twilight in this fanfic still serves as the backdrop. It provides the familiar world and characters that readers of the original series know. However, the 'tumor' aspect added to Edward's story might put a new spin on the Twilight elements. For instance, the vampire - human relationships which are central to Twilight could be affected by Edward's condition.
Yes, it is a bit strange. After all, they are the ones living the story, and fanfiction is often a creative interpretation by outsiders. It's like they are stepping into a parallel world where others have reimagined their lives.
Well, it's subjective. But fanfictions that delve deeper into the relationships between the vampires and werewolves in Twilight can be great reads during twilight. They can offer new perspectives on the complex dynamics in the original story. Also, those that add a new romantic angle to the existing characters' relationships, like a love triangle involving a new character, can be quite engaging.
It could be somewhat common. Twilight has a large and passionate fan base. Some fans like to explore different storylines and character developments through fanfiction during the twilight hours as it might add an extra layer of moodiness that matches the tone of the original Twilight series.