As someone who personally experienced the Balance Rules' will embodiment within the Dimensional Esophagus, Green knows all too well the challenges and terrors of such an embodiment appearing.
The will of the rules is the vastest, most fundamental rules that span the Endless World, serving as the foundational structure of the Endless World.
However, the will chasing the manifestation of the Primordial Dark Saint Ancestor at this moment was not the Balance Rules' will that Green encountered. From its attributes... this is the Time Rules' will!
It appears that during the Dark Portal's ongoing manifestation process, after penetrating deeper layers of illusion, the Primordial Dark Saint Ancestor touched upon the Time Rules' will amidst the absurdity.
Just as in the Dimensional Esophagus, "Grimm's Fairy Tales" serves as the condition for summoning the will of the rules.
