Seems like I’m the only person who knows anything about this brand.
It’s made by Bridgestone. It’s by far the most popular regulator brand used in Japan right now by Japanese divers.
Most people in Japan use the CMAS style, where the secondary regulator is routed to the left. Thus, most regulators have the LP hose going from the bottom so they can be used left or right handed.
I’ve never used one, so I can’t really provide a personal account, but the instructor I dive with, who has far more experience than me says they’re good.