Shirakansu Building is a contemporary mixed-use structure completed in 2001 in Tokyo's Chuo Ward, designed by architect Moritsugu Kei of Studio A. Located in the Shinfutomi district, this versatile building seamlessly integrates residential, commercial, and office spaces alongside workshop and storage facilities. The structure exemplifies early 2000s Japanese architecture, efficiently combining multiple functional programs within its urban context. Its thoughtful design demonstrates how diverse uses can coexist harmoniously in a compact metropolitan setting, making it a notable example of pragmatic urban development and adaptive architecture.