Tokyo Ravens

Tokyo Ravens  is a Japanese light novel series written by Kōhei Azano and illustrated by Sumihei. It was adapted into a manga series in 2010. It received an anime series on October 9, 2013. Funimation simulcasted the series on their website. On October 29, 2014, Kadokawa began publishing the English volumes of the Manga on BookWalker, their official eBook store.

Plot

Onmyodou magic was once a powerful technique which was used by the Japanese during World War II. Later, infamous onmyoji Yakou Tsuchimikado performed a ritual known as the 'Taizan Fukun Ritual', which will eventually bring out Japan as a formidable force. However, the ritual goes horribly wrong and the result of this becomes what is now known as the "Great Spiritual Disaster", an incident which haunts the entire Japanese continent till date. In addition to this, the Onmyo Agency was established to monitor supernatural activity in the area and to combat any spirits or demons that would make their way into the real world.

In the present day, onmyodou has become more refined, simplified and modernised, even finding its use in the fields of medicine and technology. But not everyone are capable of affording this power, as can be seen in the case of Harutora, a member of one of the Tsuchimikado's branch families, who was born with no spiritual power. Despite being born to a distinguished onmyoji family, his life has become meaningless as he can accomplish nothing without any spiritual power. But he does remember the fact about him making a promise with his estranged childhood friend Natsume, the Tsuchimikado's family heir and Yakou's supposed reincarnation. Despite his background, living a normal and peaceful life is what Harutora ever wants. But when a group of people from the Onmyo Agency attempt to recreate the same tragedy that led to Japan's downfall two years ago, he decides to take matters into his own hands by fighting alongside Natsume as her shikigami (familiar).