Kuromui

A Eldritch God, always in a form of black mist,have the ability to transform and use everything it has devour.Only if it choose to reveal itself by boringness or lust,interest that it will transform into a female/male that has a handsome face,long black silky hair, and a tall, rough body with scars(most see its wearing a suit in male form, a black kimono with spiral pattern on it in female form)