User blog comment:Granberia/Monster Girl Quest : Paradox - Story of Heavenly Knights/@comment-25303995-20160319225638/@comment-26441687-20160320015710

Considering Granberia is still around and free to take action(her duel against Neris for example) until fairly recently that doesn't seem very likely.

Since the monsters are currently in a war of succession, they're probably just away from the story because they're valuable to have fighting or taking care of other important business.