Industrial demolition firms in Tokyo, Japan, began implementing plasma blasting and non-explosive expansive demolition agents for urban excavation projects. By using high-voltage electrical pulses or expanding chemical grouts instead of traditional high explosives, engineers could fracture rock and concrete without producing shockwaves, flying debris, or loud acoustic reports. This technological pivot allowed for heavy excavation directly beneath existing skyscrapers and transit tubes.

The reduction of demolition from a loud, smoky blast to a silent, electrical fractures shifted Japanese urban poetry away from themes of violent destruction. Poets focused instead on the sterile, quiet, and hyper-controlled erasure of the old city lines.