The Moon Goddess' Abundant Blessings
According to the legend, werewolves were once wolves that were blessed with superior abilities. They not only ruled amongst the ordinary wolves but also acted as guardians to men. Over time, the superior wolves became more and more envious of the human beings that, despite their weakness and limited wits, were able to thrive and become the rulers of the earth.
The superior wolves on the other side had to remain hidden in darkness.
Night after night, the wolves howled out of frustration and sadness. They begged the gods and goddesses to be able to become human beings as well. The story said that the wolves cried for a hundred days and nights before a goddess finally deigned to grant them their wishes.
The strongest of the superior wolves, later on referred to as alpha werewolves, were granted the ability to shift into human form and wolf form at will. These alpha werewolves then separated and established their own packs. That was the origin of the werewolves.