Gen Okamura began his recording engineering career at [place:dcfb8b46-080c-47bd-8651-407c91ceb7be|Onkio Haus]. After three years, he moved to Hong Kong, where he worked mainly with the producer [artist:ba815aed-8524-43f3-8d74-87602a04c84e|Mark Lui]. Okamura then returned to Tokyo as a freelance recording engineer.