It is a fantasy love novel, and I don't have any ideas on how to develop it ==!
It's roughly like this:
Volume 1: Undercurrent - the encounter between the protagonist and the main characters in this life
Volume 2: Seven Star Bead---The protagonist is looking for the Seven Star Bead
Volume Three: "Death" and "Mourn"---The formal battle between the two organizations
Volume 4: Destiny and Destiny---Ending
Wouldn't it be a tragedy? Probably not^^