This is two- story house in dense residential area in Saitama, Japan. Because the owned property is bordering two heavy traffic roads, it was required to sound suppression because there are always many cars and pedestrians in daytime. My client requested to have the house that does not expose living condition to outside and has an open air to inner space universally. To prevent from the sound and protect privacy inside, we utilize the half mirror glasses for the skin of the house. At night when there are fewer people, it contributes and exposes the beautiful scenery of garden to outside.