The site is a narrow plot along the sandy coast of Kitsuki in the Kunisaki Peninsula, Oita Prefecture – land that was traditionally used for drying shichito-igusa, a type of rush grown in the region for making tatami mat surfaces, and is now overgrown with bamboo grass. The roof is a stressed-skin panel with flexural rigidity in both directions, composed of 2×4 timber arranged in a triangular truss pattern between two layers of structural plywood. The street-facing facade serves as both a screen and a structural wall, mirroring the triangular section of the roof. Within the 9-meter square plan, subdivided using the golden ratio, small square spaces serve as a mezzanine and a semi-underground bedroom. The kitchen features a pivoting storage unit that opens in an L-shape, containing a collapsible table.
