在设计空间时最大的挑战是使用固定不变的天花板低高度、以及较为单一的天花板瓷砖 ， 这是东京典型建筑特征 。 员工希望能够调整天花板 ， 使空间感觉更大更亮 。 作为回应 ， Suppose Design Office和环境小组构想了一个方案 ， 将黑色的天花板与吊灯结合在一起 ， 消隐上方空间 ， 给人们一种天花板更高、空间更大的印象 。

One of the biggest challenges when designing the space was working with fixed low ceiling height typical of architecture in Tokyo and monotonous ceiling tiles. Employees expressed a key need to adapt the ceiling to make the space feel bigger and brighter. In response Suppose Design Office and the Environments Team formulated a design that incorporated a black ceiling with dropped lighting so that the plane above disappeared and gave the impression of a higher ceiling and a bigger space.