The Voice of Yin (殷の声, "In no Koe") is the name of an ability developed together with Isamu's trademark, Eye of Yin ability and completed shortly after the former - the Voice of Yin, like the Eye is centered around the emotions of those it is directed towards, but unlike the Eye - the Voice of Yin is known to affect any emotion that the caster wants it to affect, albeit it can only affect but a single emotion at a time; whereas the emotion exists naturally in the target at the moment is irrelevant to this ability, as long as the target has the capability to feel the emotion in question. The voice works by combining Isamu's telepathy and empathic powers together with the strength of Yin and then use his own voice to extend the abilities influence.