Uh, you're not an entirely new RPer, so you won't be getting the added Kumi bonus. You're free to get an orientation to understand the new system, though. @Gααrα
It is basically like the old Ninja World, but with a new name.
You essentially choose one bio and will use it as the bio in the WSE (Warring State Era). Also, if you drop your bio you will lose any progress you have made with that bio like any collected ryo.