Amethyst Bamboo

The Amethyst Bamboo is the core of the defenses that the human Spiritual Gods laid down to protect the Subsidiary Realms that humanity escaped to. The Primal Chaos Spiritual God's family, called the Primal Family, are one of the ones that have inherited a copy of the Amethyst Bamboo as a guardian object. Because of this, the demon beast clan's Spiritual Gods can not force their way into the Dreamcloud World.