From Magical Girl to Striking Back at the Dark Forest

Since time immemorial, gods have fallen into the mortal world, turning into vast, endless dreams... People call them the Imaginary Realm, though some call them the Dream Realm.

Those chosen by fate can forge contracts with its spiritual beings. Dreams are most unreal, and the unreal is most yin. Because yin is feminine, and because people in modern times like the term, they are called magical girls.

From then on, the Void Beasts that ravage the human world could finally be purified.

But when the civilization that follows the Void Beasts bares its fangs, the dark forest among the stars is full of contempt for low-level civilizations.

How can this be resolved?