THE CAT'S BOX is a residential project completed in 1981 and designed by the Yoshihiko Osugi Architectural Research Institute. Located in Toyonaka, Osaka, this distinctive residence exemplifies the architectural innovations of early 1980s Japan. The building's unique approach to domestic space reflects thoughtful design principles that balance functionality with aesthetic consideration. Its compelling name suggests a distinctive spatial philosophy central to its architectural concept. This work represents an important example of residential architecture from its era, showcasing the creative vision of its designer and offering insights into contemporary approaches to residential living spaces during that transformative period in Japanese architecture.