Ken Horen is transported to a parallel world in Tokyo and becomes an ordinary high school student. However, he unexpectedly inherits the powers and bloodline of Tamamo no Mae, one of the three great yokai kings of Japan. By awakening his bloodline step by step, he can become a powerful yokai. But instead of joy and excitement, he feels deep fear and worry. Because... "Daily News Flash: The Onmyoji Exorcism Squad recently raided Mount Oe and eliminated the descendants of the self-proclaimed Great Yokai King, Shuten Douji. This is the 20th large-scale exorcism operation this year, with more and more hidden demons being eliminated..." The news on TV chills Horen to the bone. This is an era where humans are strong and demons are weak; demons can only hide and tremble in fear...