Yuko’s reference is the Pana Wave

The Pana-Wave Laboratory (Japanese: パナウェーブ研究所) is a Japanese new religious group or "Shinshūkyō". Estimates of membership range from several hundred to 1,200

Pana-Wave is an offshoot of a religious group called Chino-Shoho ("True Law of Chino") based in Shibuya, Tokyo, founded by a woman called Yuko Chino in 1977 and combining elements of Christianity, Buddhism and New Age doctrines.

In the mid-1980s, members calling themselves the "scientific faction", and warning of the evils of electromagnetic waves (which the group claimed were causing catastrophic environmental destruction and climate change) built the Pana-Wave Laboratory in Fukui Prefecture in an area they believed was less at risk from electromagnetic pollution. Members started to dress only in white (there have been exceptions) in the mid-1990s, in the belief that this would protect them from harmful "scalar electromagnetic waves".

In 1994 the group formed a convoy of white vans which traveled around rural Japan searching for a place least at risk from harmful electromagnetic radiation and away from power lines, and setting up camp in remote locations for months on end and covering everything in white.