Fuji and Chiaki are busy with work and haven't contacted recently. After a long time, Chiaki invited her to visit Yokohama's famous architectures. They headed to Kanagawa Prefectural Library and Concert Hall by Kunio Maekawa, one of Japan's leading architects, and enjoyed the modernist architecture that represents the post-war period. While visiting Yokohama, Fuji discovers the true purpose of Chiaki's arrival and invites him to Hotel New Grand. There, Chiaki was waiting for an elderly and elegant woman, Yoko Uno. She offered a handwritten blueprint that she wanted to give. It was designed by architect Koichi. Chiaki thinks about his father's last job, when his illness was discovered, and decided to take some action. (Source: Japanese = Paravi.jp || Translation = Kaisrexci at MyDramaList)