Head of this core, Prof. Keiya Nishida, retired from professorship at Hiroshima University in March, 2021. The continuation of the Advanced Core of Energetics, Hiroshima University (HU-ACE) with Prof. Yukihiko Matsumura as its new head of this core has been officially approved. We will continue to develop the Hiroshima Scenario, information sharing on energy, and interdisciplinary collaborative research on energy and the environment, and thus, we would like to ask for your continued support going forward. Prof. Nishida will continue to participate in the organization of this core, collaborative projects, etc.