The direction in which the site is facing the front road is west, so it is the most difficult condition to take in the exterior environment. It is difficult to realize both environment-consciousness and comfortable-ness with taking in natural daylight from the only west direction.

By folding it around the workplace, people are connected with nature and the workplace on the site boundary, aiming to realize environment-consciousness and comfortableness. As for a configuration of the building, the architects stacked large space at the bottom and small space in the upper part creating the relationships between half-outdoor space with natural daylight and workplace required in the headquarters. By this stacking, the team were able to take in the natural daylight into all workplaces, including small ones.

Additionally, they designed half-outdoor space to be continuous and traversable space along the building. Therefore the intermediate space where natural daylight and breeze are going through is realized. The intermediate space enables inner and outer space to have more depth. The half-outdoor space is not only giving proper change and rhythm to the workplace but also has an important part as a workplace itself by easing the exterior environment and taking it in. Between summer and winter, the natural breeze is taken into the building from the intermediate space. The open stairs for smooth communication and split-level workplace that is responding to the relationship between departments are connecting each part of the whole building, and natural daylight and breeze is going through the building.

The intermediate space is connecting inside and outside closely and giving more depth to both. The whole building is wrapped with porous shades. As to the size and angle of the openings, three patterns (for upper part/bottom part/half-outdoor space) were taken from the quantified simulation among a reduction percentage of direct sunlight and a luminance distribution at the inside of the shade and a feeling of openness.

The outer shades are playing a role such as cutting solar radiation load and direct sunlight, taking in indirect sunlight and breeze, adjusting the view from the apartments nearby. Also, the openings that are shrinking toward outside enable them to avoid eye contact from the apartments nearby. And by their cutting the light from the workplace properly, the architects realized the office that is fitting in very well with the district that is mixed with offices and apartments.