not heard anything about that but it would not surprise me if it was an IR shoot, the BJ scene Miri Mitsuki shot pretty recently was a big breakthrough for a top-ranking Prestige actress, as they NEVER do IR… Maybe she just went there on vacation but if her studio sent her there it is definitely something big! Studios cannot afford to send girls all the way across the pacific to shoot some gravure!
All I know is studios know they can’t just keep on letting top talent do vanilla shit again and again , dirty talk, creampie (mostly fake anyways), doing the office lady, swimsuit, whatever, it all amounts to the girl getting fucked by the same old scrawny AV guys you seen a thousand times before with their four inch dicks over and over– profit margins are plummeting, and although japan is insular it is not THAT insular, Japanese are aware of the ultra-high res hardcore action produced by the top American studios and know they have to move with the times.
Hence a lot of VR being put out recently, like
this IR one with Kaho Shibuya…sadly I have no idea how to watch it on a computer though! AV studios know they have to do something different now if they want to survive, so if Miri Mizuki is not going to LA to shoot IR, it is only a matter of time before it becomesa normal thing.