born with spatial manipulation, Zero and kids in the tribe use their swords as physical focal points to slice open small local rifts. This allows them to bypass the dangerous vertical geometry of the 4th Layer or escape the deadly vines of the Goblet of Giants. The 4th Layer is filled with massive, humid vegetation and toxic flora (like the Amaranth). The children use the black flames of their swords to instantly incinerate obstacles without letting poisonous spores spread. These relic hunting half kitsune also make sure lines of criminals reach the rift to be sacrificed to fulfill the tribe's tax to the abyss in souls. They also trade relics for cool toys from the surface town.