Holy Route, Dark Route or Egg Route.
The last successors of the Altermenos empire are:
Holy Route:Lazareth(Big Sword) and Iris(Epee).
Dark Route:Ivan(Epee) and Olga(Hammer)
In the end, the emperor/empress, fights Vadagara in some way.
Egg:Via The Egg.
Both Holy and Dark successors refer Adel as a father.