A Hanyō (半妖, "Half-demon") is a mixture of a human and a yōkai, either by birth or by unnatural means. There are two ways that a hanyō is born. One can be born of a yōkai and a human. Apparently, in most cases, the father is a yōkai, and the mother is a human.The other way is when a human with an unfulfilled desire merges with many demons; Naraku and Sara were born as hanyō in this fashion.