The performance starts as a horizontal line projected on the screen tremors . the line drastically multiplies as if to discharge its immanent energy. Similarly, when Umeda on stage trembles, covert energy withheld in his body is transmitted from the pelvis to the spine, to the arms, and lastly to the digital screen situated at the rear, in which the energy is visualized by curved lines reminiscent of a solar corona. When waterfalls and rivers are seen from afar, they seem to maintain static forms; yet, when one zooms into the same objects in a microscopic level, it is noticeable that they are consisted of ceaseless motions such as swells, waves, vortex and crosscurrents. Based on this creative concept, in Intensional Particle, Umeda reinterprets the particles in space as not static molecules but rather as ‘active particles (or, mass points)’ and visualizes, in space, the ‘intensional force’ that particles conceal.