Slit-3 Okahata Residence is a distinctive residential project completed in 1981 in Sakai, Osaka, designed by Takamitsu Azuma Architectural Institute. This residence exemplifies the architect's innovative approach to residential design, featuring characteristic slit-like openings that define its aesthetic and functional qualities. The building demonstrates Azuma's philosophy of creating intimate living spaces through careful manipulation of light and spatial composition. The project represents an important contribution to Japanese residential architecture of the early 1980s, showcasing the architect's mastery of minimalist design principles and spatial efficiency in urban housing.