"Traitors of the Yinbuke, who obtain the forbidden powers of the Homoru."
Moukeru (Lit. Gain) are Yinbuke who have been able to absorb enough Yang energy to create an inner Homoru. Once the inner Homoru has become strong enough to influence the user, this marks a Yinbuke's evolution to Moukeru. To gain this inner power, they must battle and subdue the inner being. To access it, they don a Homoru Mask.