This world is a bottomless vessel divided into three parts. In the center of the vessel is the Yav' world in which all people and the mighty giants Volotslive, the ancestors of the Bogatyrs. Above it extends the upper world of the Prav' – the Kingdom in which the righteous, Divya People and God live. Under the Yav' is the nether world Nav' – the land where sinful souls, Larvae and the Serpent tempter live.
For the higher and lower worlds, the people living in Yav'are bundles of energy, kawaha, on which they feed. The inhabitants of Prav' feed on kindness, compassion, and diligence – the energy of love. The inhabitants of Nav'feed the energy of pain, suffering, decay, anger, resentment, jealousy, anger, and so on. Every good or bad act of a person raises or lowers Yav' in the direction of one of the worlds, and their inhabitants begin to penetrate it. Spirits of Prav' and Nav' can influence people, and the closer the Yav' is to one of the worlds, the stronger the influence is. They encourage people to act, exuding the necessary energy and bringing the entire layer of life closer or further away from themselves, increasingly appearing in it through matter and space.
People living in the Yav' world, in the natural process of evolution, lowered it closer and closer until many centuries later there was the first contact between Yav' and Nav'. As a result, not only beings from another world came to the world, but a specific energy was released that infected all Yav'. Like radiation it settled on the world and changed some people, passing them the genome of animals.