More than 1,500 university students from 500 universities in 40 countries attended the Global ASEZ Summit 2023. They had in-depth discussions on climate change mitigation and adaptation, crime prevention, and global citizenship initiatives, and they adopted the U500 [500 Universities] Joint Declaration for the happiness of humanity and the realization of a sustainable society. People from all walks of life signed the Declaration and agreed to lead a sustainable future by carrying out the six agendas.