One of the Hachiyo, he is the Genbu of Earth. Yasuaki is an Onmyoji, and a disciple to the famous, historical Onmyoji Abe no Seimei. He is cold and analytical. Because he is an artificial human created by Abe no Seimei, Yasuaki lacks human emotions. His elemental attribute is Mountain, and his dragon jewel is located beneath his right eye.