Kotaro Imai (IIS, UTokyo)
Kan Kunieda (Nippon Koei Urban Space)
Hidemasa Nagata (Nagata Structural Engineers)

How can architecture reconcile the divergent demands of disaster preparedness and tourism within the flow of time? In Toi—designated as Japan’s first Special Tsunami Disaster Warning Zone (Orange Zone)—the act of evacuation, usually confined to moments of crisis, is woven into everyday circulation and patterns of stay. The same spatial framework shifts its meaning between ordinary and emergency conditions, forming a multimodal structure that accommodates both. Rather than operating as a device activated only during disaster, the building is conceived as an inhabited landscape in continuous use, demonstrating how architecture can simultaneously strengthen regional resilience and long-term sustainability.