A redevelopment project located in front of Toranomon Station on the Ginza Line, which runs in the shallowest underground in Tokyo. In order to provide space in front of Toranomon Station, where the daytime population is rapidly increasing and crowded due to vigorous redevelopment, the subway platform has been widened to include private buildings, and a spacious station square directly connected to the ground and underground has been established. We designed a simple space where you can feel the depth unique to this place, which is a beautiful background that reflects the people passing by.