Today, in frightening growing speed of urban area, our cities are built vastly with impermeable material, such as concrete paving, glass façade, etc. On one hand, these materials provide us with the convenience of fast expansion of cities. This double-edged material, however, has brought us significant amount of disasters such as flooding and pollution, which were well balanced in a natural system. Focusing on the study of water, the research of implementing natural systems within brick wall, not being the end, was intended to revitalize our urban elements with the metabolism subtly as an underneath logic. In architectural scale, the design boosts microclimatic optimization. The collective use of such would lead to reduction of water consumption and pollution. Eventually, the increase of water content within our cities could act as a buffer zone to prevent potential problem of catastrophic flooding.