In April 1993, Ozawa Tsuyoshi opened Nasubi Gallery, the world’s smallest, mobile gallery, on the street outside the Nabis Gallery, a well-established rental gallery in Tokyo’s Ginza district, the home of numerous art galleries. With Nasubi Gallery, created by painting the inside of a wooden milk box white, Ozawa mimics the ‘white cube’ exhibition space of a typical art gallery to question Japan’s unique system of rental galleries, which lend space to artists for a fee. With this act, Ozawa became a gallery owner, holding exhibitions in various locations, and has since over 200 artists, both young and established, such as Takashi Murakami, Yayoi Kusama and Ai Weiwei have joined Ozawa.