Walls of Neutrality In saunas, strangers share close space, yet true intimacy is rare in Japan. Proximity varies from personal to public, but public saunas have yet to foster a communal feel. By designing a sociopetal space that respects Japanese sensibilities, we can create a shared, non-intrusive environment. A wall that is both attached and detached helps balance intimacy. Its verticality echoes the forest, and its gaps draw nature inward while subtly regulating closeness. Implementing this in a PARK-PFI project reimagines public space and community interaction.