This paper proposes that gravity is Time Pressure in the Koku Universe, generated by the rotation of Gen-Kuuki Cells — the smallest units of the universe existing at the boundary between the Koku and Genki dual-layer universes. The gradient of this time pressure is identified as the true nature of gravitational attraction. This hypothesis was visually pre-described in the author's 2010 Flickr diagram 'time pressure', where each cell in the concentric circle structure corresponds to a rotating Gen-Kuuki Cell, and the 'TIME PRESSURE' label pointing toward the center represents gravitational attraction as time pressure gradient.
Yoshimitsu Katayama (2026) studied this question.