It is a wooden house of a flat store built in Satsumasendai City. It is a building of a characteristic space with sloping sloping roof and ceiling, segmented garden / courtyard. Combine gradually different angles and different gradients to form a continuous roof like an origami and stretch the ceiling with a gradient. The height of the ceiling is also different depending on the space, with some changes in the floor height, we gradually segment the fluid space by the height. The roof and the exterior wall emphasized the solid feeling by making it the same material of the white gauze roofing of the white steel plate and aimed at expression of a new wooden which is not a flat roof.