The Toyomi Tower Marine & Sky is planned in the Kachidoki area of Chuo-ku, part of an area that continues to evolve with various surrounding projects. This location offers easy access to Ginza and other central locations, yet the view of the magnificent ocean stretching out before you is by far the most reminiscent of an oasis in Tokyo, a location that makes you forget the hustle and bustle of the city center and allows you to relax and feel the flow of the city. Based on the concept of “balloon towers” floating in the blue of the sea and sky, we supervised the exterior design as well as the interior design of the common areas. The soft shape of the building expresses the lightness of floating in the sky. The tower’s rounded shape, like a balloon, is created by the air. The plan of the tower is designed as a series of curves by rounding off the corners and by softening the silhouette of the building through the tapering off the upper floors, allowing for a building that gives a weightless impression.