: This could be the name of a project or concept study focusing on portable solutions for shared living or working spaces, with "ds 21" being a project code or identifier, and Yotsuha Kominato a lead researcher, designer, or main figure.
With the , you can:
The "Shared Room" (Aheya) genre is a staple in Japanese adult cinema. In the context of Yotsuha Kominato's work, she has starred in films with this exact premise.
: Sony once developed a service for the PSP called Room (R∞M) , specifically designed to let owners invite others into a virtual space for real-time communication.