A one-story wooden green tea ceremony room constructed in the mid-Showa period. Located in Oote-Dori facing to the south, soon after turning to the west from Tanimachisuji Street. The Dozo (storehouse with thick earth walls) is still standing on the southwestern side of the main house. A two-stories fireproof building with formal Kawara roofing was renovated to the green tea ceremony room named ‘Koma’ in 1941. The ‘Sen’ bricks are paved over the earthern floor on the first floor. Joist ceiling. Two longitudinal casement glass windows are installed on the western wall, and the design of the combined framework is Chinese style. This is one of the rare Dozo architectures of the early modern period retain in the urban area of Osaka.