The new house, an addition to an existing main building, is designed for a family with four sons. Each son has his own study and sleeping areas, by rotating 90 degrees three thin platforms and shifting the locations. The floor areas where each platform overlaps have been utilized as a closet and storage. In the morning, the eldest son on the top platform goes down to the lower one, saying "Hey Brother", to awake the second son, then steps down further to awake the next, to go to the main building all together. Within the narrow site, the house is designed to enhance and maximize their communication and interaction to grow together.