A Person Eater (
Also known as the heretical tsukumogami, a Person Eater is a tsukumogami which commits the taboo ritual of consuming humans. Tsukumogami that possess their owner are able to absorb their life force to consume their power. Doing so quickly grants the tsukumogami a great deal of power and the ability to survive without an owner. Once the act is committed however, the tsukumogami become unable to be own by humans and their sense of self gradually breaks down.
This ritual is seen as taboo, since humans are responsible for the birth of tsukumogami in the first place.