Nemesis Horizon

Nemesis Horizon is a Cauldron in the sky, where the Amaterasu Unit was hidden. It was revealed when a large quantity of souls was gathered and offered to the monolith pillar and Nu-13, having synchronized to become identical to Noel Vermillion, fooled the Cauldron into thinking of her as the true Successor of the Azure. The gate, in turn, responded, opened and the Amaterasu Unit descended into the world.