News website Kotaku.com reported that one promotional display was in the basement adults-only section of AsoBitCity, an electronics retailer in Tokyo's Akihabara district.
The sign has adult video covers and according to Kokatku.com, it reads: "Blu-ray adult movies, definitely enjoy them on the new PS3!"
Earlier this year, Japan's adult industry adopted the Blu-ray format, with adult producers accessing technology and resources to manufacture the discs.
Many adults-only sections in retail stores in Japan reportedly have started stocking Blu-ray adult movies, with in-store displays and advertisements promoting the new 40GB Sony PS3 console as the best way to watch adult material in high-def.
As recently as January, Sony Corp., which manufactures the PS3 game console and developed the Blu-ray format, refused to work with the adult industry and would not permit adult material to be replicated at its Sony DADC disc manufacturing plants.