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Despite the lively battle between Tsuchimikado Yoshiharu and Kojo Kyoko and their opponents outside the warehouse, Chen Yu, who was inside, was not affected at all; all his energy was still focused on the construction ritual of the Necromantic Space.
Capturing the appropriate Space Fragments and stabilizing the spatial structure of those fragments were only the foundational parts; the construction of the Necromantic Space could only truly begin after completing these steps.
To build the Necromantic Space, it was necessary to infuse soil, water, flames, and air into the Space Fragments; these were essential for creating a self-sustaining space and also considered by mages as the crucial keystones of the world's construction.
Since soil was already available, Chen Yu did not need to fill the Space Fragments with more soil from the Earth Elemental Plane, so he only had to supplement the space with water, flames, and air from the other three Elemental Planes.
