Tokyo Ravens - S01

Onmyoudou magic was once a powerful technique used by the Japanese during World War II to gain the upper hand and establish their nation as a formidable force. But Japan was quickly defeated after the revered onmyouji Yakou Tsuchimikado caused the "Great Spiritual Disaster," an event that plagues Tokyo to this day. As a result of this mishap, the Onmyou Agency was founded to exorcise further spiritual disasters and combat the demons that would make their way into the world. Now, Onmyoudou has become far more modern, simplified, and refined for use in a wide range of applications such as medicine and technology. However, not everyone is able to use the magic, as is the case with Harutora, a member of the Tsuchimikado branch family. Despite an old promise to protect Natsume, the heir of the Tsuchimikado main family and Yakou's supposed reincarnation, as her familiar, Harutora has no talent and chooses to live a normal life instead. But when a prominent member of the Onmyou Agency attempts to recreate the same experiment that led to Japan's downfall, he decides to make good on his word and fight by Natsume's side.