Testpattern

Mythical and notoriously illusive minimal synth-pop masterpiece from flash in the pan Japanese duo Testpattern. Does anyone have idea what happened to this pair? After dropping this cult debut and contributing two strikingly future-facing cuts to that 1983 Yen Manifold comp, then seemingly vanishing entirely - some traces online say 1/2 of the duo (Hiruma) did some chiptune stuff and computer game soundtracks, which seems like a logical progression from here but only adds to the mystique.