Interior design plan for a Sukiyaki restaurant opening in Toranomon, Minato Ward, Tokyo. The counter seating area is designed as a one-room space that can be divided into either one or two rooms using movable partitions. The partitions feature two sloped ceilings that start from the transom and face different directions. When used as a single room, the ceiling forms a butterfly shape. When divided into two rooms, it creates separate spaces with individually sloped ceilings that differ in orientation. This allows for the creation of spaces with varying scales depending on the setup.