Before the age of gods, many powerful spirits roamed the lands. These creatures dominated the mortal races into worshipping them and by their primal natures they were able to harness this worship to some extent. One such an entity was determined to become the god Hhoru.
In his early form Hhoru demanded sacrifice from his subjects. Through the spilling of blood he gained presence and through consuming it he gained strength. His subjects brought him fresh kills regularly and he feasted aplenty in the early ages of the world. Soon he became ome of the most powerful of immortal spirits on Myrth.
It is not clear exactly when and how Hhoru ascended to true divinity. But those who worship the Blood god mostly think it irrelevant. There is power to be had through sacrifice at his altar. Though some suggest a sinister plot that led to Hhoru's ascendance.
So it is said, that during the first age of the world, Hhoru had anticipated a great cosmic event, through a powerful blood divination. He positioned himself in such a place that he was able to intercept the Seed of the Moon as it fell to the earth. His subjects lined the hills in thousands as the Seed descended and at his command ten thousand souls plunged instruments of death through their hearts, lending their life force to the Blood god.
Through the mass sacrifice Hhoru was able to withstand the magic the Seed cast over the lands. He basked in its power and drank in the cosmic whirlpool of creation. Through the Seed and the blood of ten thousand, Hhoru ascended his form. His earthly body could not withstand the forces around him and was deformed - his dark wishes initiating an abhorrent transformation. But the Blood god's mind remained, anchored to the land and spanning across the realms as it pierced the vail of the cosmos where the Seed fell to earth.
There is power in blood. There is more power in blood given without consent. Such is the nature and the purpose of the Blood god and the purpose of his birth.