Hmmmmm...... okay, Fallen Hero Timeline* for this story:
Fuyuki actually does go overseas and leaves the series, and one of the other girls becomes the main female lead. Then before any significant progress is made, she too has to go FAR away. Finally with only one female lead we see some other BS happen that prevents progress and the Manga ends.
Its a good thing we are probably not in the Fallen Hero Timeline.
* This is a reference.