M3: Sono Kuroki Hagane

In a dark void known as the Lightless Realm, a group of children meet and form a mysterious connection, only to be separated and returned to their own world. Years later, these individuals reunite to combat "Admonitions"—otherworldly monsters emerging from the same void—by piloting powerful robots called "Vess." Their ongoing battle serves as humanity's last defense against the encroaching darkness that threatens to consume their reality. As they struggle to protect their world, the team faces new challenges that test both their abilities and their bonds. When an unprecedented threat emerges from the Lightless Realm, the group must confront not only external dangers but also their own inner conflicts. The delicate balance between their personal lives and their duty as protectors becomes increasingly difficult to maintain, forcing each member to make difficult choices that will shape their destiny and the fate of all humanity.