S01E01 Onmyou
Within the capital, there are rumors of evil spirits causing mischief in the night. Among those spirits hide creatures from Makai called Horrors that feed on humans. It is up to Makai Knights and Alchemists...
The Fujiwara household is the next to be attacked by a Horror. Yorinobu visits Seimei in hopes of aid, but Raikou ends up going with Yorinobu alone. Yorinobu unawaringly leads Raikou back to his birthplace and Tadano Shinbochi's darkness is revealed.
Heian-kyō, capital and the center of elegant, aristocratic culture, is heavily guarded by a spiritual force field -- or so it seems. In reality, onmyōji (court magi who create the spiritual force field) can only defend the palace located in the northern part of the city; in downtown, monsters known as "horror" that feast upon human souls roam after sunset. There are, however, a group of heroes protecting commoners from "horrors" in darkness.