One idea could be exploring the unique magic that might exist during the eternal equinox twilight. Maybe there are special creatures that only come out at this time. Another idea is to have a love story set against this backdrop, where the characters' relationship is as mysterious and beautiful as the twilight itself.
First, start by researching what an equinox is and what makes it special. Then, think about how the twilight during this time can be different from normal twilight. You can begin with creating a character who is somehow connected to this phenomenon, like a scientist who is studying it or a person who has a special ability related to it.
The author of 'Vernal Equinox' was Fu Yu.
The original work was equally exciting. You could click on the original work of " The Story of Rose " to understand the plot in advance!
Twilight is not a fanfic. It was developed independently by Meyer and became a highly popular series. The story, characters, and plot are all original creations of the author.
I'm not sure specifically which 'equinox based on true story' you are referring to. It could be a movie, a book, or some other form of media. Without more context, it's difficult to say exactly what it's about.