Fifteen projects by Japanese architects are presented in this volume, which explores a mixed group of new buildings brought together under the theme of mass. Each work is illustrated through numerous photos and drawings, and accompanied by detailed project data and description. Among the featured buildings are Okidai House by kenta eto, Studio Velocity's Forest House in the City, T-Nursery by Uchida Architect Design Office, Spiral Roof by Koji Kudo, Shugoin by Love Architecture Inc., Takato Tamagami's Northern Nautilus, Zushi Apartment by K2YT, and others. The works, all of which are situated in Japan, commonly feature monolithic forms and closed facades.