Growth is defined as a behavior of adaptation, serving as both the formal and atmospheric driver of the design. Drawing inspiration from Yakushima’s ancient cedar forests and the legendary Jomon Sugi, the building emerges from the earth like a tree, shaping itself to respond to the unique climate and terrain. Situated on a seclude mountain plateau, the architecture acts as a vertical extension of the landscape, where "branches" of living space project outward to capture distinct sceneries: the shimmering sea to the south, the majestic peaks to the north, and the dense, surrounding forest.
Navigating the paradox of Yakushima’s climate—where it is said to rain "35 days a month"—the design embodies a constant interplay between the sheltered and the exposed. Like a tree canopy, the expansive roof provides a refuge from the intense precipitation, yet the space beneath remains porous to the nature. The ground floor is for bath and leisure, the semi-outdoor terrace allow guests to enjoy the bath and rest during different weather conditions. The second floor living spaces encircle a courtyard which is exposed to the sky. The architecture captures the shifting moods of the weather, keeping people intimately exposed to the breath of nature.
The center of the building is a vertical cavity inspired by the Wilson Stump, creating a sanctuary that invites the rain in rather than shut out. This central void connects the earth to the sky, allowing guests to soak in a hot bath while rain falls gently through the void skylight. Within this hollow core, the view is framed to the rock lake, the lush forest, and the distant peaks—a profound communion with the timeless rhythm of Yakushima.