This case concerns the planning of a new single-story residential dwelling, with an approximate indoor area of 116 square meters. The spatial orientation belongs to the west-facing direction, and the flat layout also obscures the corridor from light. In the initial planning, the orientation was adapted from sunlight to daylight advantages. This was achieved through the extensive use of transparent materials, integrating the client’s home office needs and their preference for Japanese aesthetics, thus forming the central idea throughout the entire project.