Since Mahungu, humans had multiplied. They conquered new territories and settled as masters. They had learned agriculture and metalworking, dominating the entire known world. But humans abused resources, neglected the cultivation of simbi, and no longer allowed the land to rest. As a result, the harvest became less abundant, despite their increased numbers. This marked the beginning of famines (luhaha), which decimated the clans. And just when humans thought they could recover, a great catastrophe struck: Ndumbi (mvula ya nsisi), a deluge.
Massive rains poured from morning to evening, devastating the fields, drowning the crops, and toppling homes. The life-giving water extinguished the fire of existence. Humanity questioned the cause of this misfortune. Some managed to perceive the origin of all these troubles, a creature named Nzondo.
Nzondo was immense, larger than the largest of men, yet not one of them. With only one eye, it could see everything. With only one ear, it could hear everything. With a leg shaped like a slide, it could move at the speed of light, traversing entire countries in the blink of an eye. Its passing unleashed cataclysms upon humanity.
Caught between death and desolation, the survivors sought refuge in Zimba. There, they realized that the nsengele mbele, the handleless sword, was lost. Along with it vanished the knowledge of metallurgy.
Humanity no longer knew how to smelt metals. And so, they dispersed, having lost the blissful time when they were direct heirs of Mahungu.