4th is a distinctive commercial and office building located in Shibuya's prestigious Jingumae district, completed in 1986. Designed by architect Akira Komiyama in collaboration with Unite Design and Planning, this structure exemplifies the design sensibilities of 1980s Tokyo architecture. The building successfully integrates retail and office spaces, reflecting the era's approach to mixed-use urban development. Its thoughtful composition demonstrates how commercial functionality can be achieved while maintaining architectural coherence. The project remains a notable example of contemporary office design from this influential period in Japanese architectural history.