To utilize the site's character which faces a busy street with a double-height ceiling, the stairs were designed to show passersby that customers are queuing in vertical direction. It made display shelves be terraced and the inside floor for staff be sloped as a result.

In seeking something light to show inside space openly, the idea of a cantilevered shelf with a point-fixing bolt attached to glass was considered. Yet since this idea seemed dangerous to the client, a different design was requested. However, Chikamori had believed it would be stable enough and that it would give a sense of newness to an ordinary product by having a different way of use. After studies such as taking data of withstanding-load, changing single leg into double and checking the strength with the mock-up, finally it has been approved.

In computer rendering, Chikamori sometimes apply different lightness on each surface of the same material to emphasize a shade. The same method was used in the real construction, applying lighter mortar on horizontal and darker one on vertical faces of stairs. Various combinations of two different colors of mortar were tested and it was carefully chosen not to be too obviously different but be effective.

Displaying products to passersby is important, however, the site floor level is higher than a street by 400mm. Due to that, the products can be hardly seen from the street. To complement this, stair-like mirrored ceiling was designed to reflect products to the street.