Expo 2025 Osaka Kansai is a key national project that will make its grand opening on 13 April 2025. As many as 150 countries and international organisations are expected to participate, and it is projected that over 20 million visitors will attend the event. This occasion will surely grant riveting opportunities for Osaka as the host city. As Mayor of Osaka at the time of writing, I would like here to convey the story of Osaka’s journey over time, its preparations as the host of the next World Expo, and its ongoing development in the future legacy.