Mizurei Ko Tokyo is a distinctive residential and office building completed in 1997, designed by Hadeigns Architects and located in the Hatiyama district of Shibuya, Tokyo. This contemporary structure exemplifies the design philosophy of the late 1990s Japanese architecture scene, thoughtfully integrating living and working spaces within a cohesive architectural framework. Situated on a modest urban plot, the building demonstrates innovative spatial planning and material selection characteristic of that era. The design reflects the practical necessities of Tokyo's dense urban environment while maintaining aesthetic sensibility. Hadeigns Architects successfully balanced functional requirements with architectural expression, creating a notable example of residential mixed-use architecture that continues to interest contemporary architecture enthusiasts studying late twentieth-century Tokyo design practices.