FLAVEST KAWAGOE is a small housing subdivision consisting of four wooden houses. The surrounding area is famous for historical landmarks and its autumn foliage scenery. Considering the surroundings, my client requested to design the house which incorporates nature indoors. In FLAVEST KAWAGOE, residents can enjoy the atmosphere of autumn leaves outside even inside the house. The Smart F Wall installed on the terrace is only 1/14th the weight of concrete blocks. It does not impair safety and workability even when stacked high, so residents can relax comfortably on the terrace.