For a long time now, the Capital Kingdom of Regunum has kept its dominance over the land during the raging wars, and kept the world... more>> at peace. There are, however, the recent appearances of humans who held within them great mystical power, the "inousha" (literally translated as "a person with a gift/talent"). The people started fearing these inoushas, and began to detest them. Because of this, the capital of Regunum carry out a movement to seize and capture all inoushas within the land to keep the people at bay. At this time, Ruca, the son of a merchant living in Renugum, discovers that he also holds the same mystical power. <<less

The Onmyou Taisenki manga does not tell the same history as the anime. The story happens years before the events in the anime.... more>>

The main character, Yakumo (who also appears on the anime, as a teenager) is the son of Monju, the chef priest of the Taihaku Temple, in Kyoto. Yakumo also trains the In, with a baseball ball. In this temple, a Toujinshi (闘神土, literally 'god of war'), and Monju's former teacher, Mahoroba, is imprisioned.

The problems start when Mahoroba escapes, gains power, and transforms Monju into stone. Yakumo is called by a Zero Drive, which was one of the treasures of the temple. This Zero Drive handles Byakko no Kogenta. The story of the manga is about Yakumo's first steps with a Shikigami, training with Idzuna (Taihaku Temple's shrine maiden) and seeking Mahoroba through various Japanese historical dates. Famous Japanese historical characters such as Oda Nobunaga can be seen on the manga. <<less