Seven schools are constantly "at war" with each other, and the students within—both male and female—have become skilled fighters and constantly battle with rival schools. Their lives and fates are guided by strange jewels that contain the spirits and destinies of warriors from the Sangokushi period. One girl, Sonsaku Hakufu, has recently moved to Japan and is apparently destined to unite the schools as her counterpart united seven countries long ago. But, like all heroes, there is a darker side to her fate, and as always there is a constant struggle by those around her to break the chains of their own destinies and make their own lives.
Loosely based on the novel "Romance of the Three Kingdoms", modern day Japan sees a similar struggle for power between different rival schools with the three strongest being: Kyosho Academy led by Sousou Moutoku, Nanyo Academy by Sonsaku Hakufu, and Ryuubi Gentoku from Seito High School. Together these three tousei, each with their own mangatama, fight for the honour of becoming ikki tousen and fulfilling their fated destiny through battle and conquest.
Preparing for the battles to come, tournaments and to fight against new opponents from over the world, Hakufu is working to have enough money to make her dream true. But she doesn't consider that old and new allies and enemies will come to scene, and also being a weak leader to the eyes of her companions. A sister also appears. She doesn't even know her mom's past so better to start from the local stuff before attempting to go worldwide.
The main fighters are summoned to a tournament that involves the heads of all the schools. But some of the heads send their trust fighters in their place. They don't realize that the tournament is just the face of a conspiracy to take over the clans. Hakufu now has a disciple as crazy and skilled as her and due to her laziness the disciple ends on the tournament in the place of her master. Now they must prove that the destiny imposed by the souls of the fighters living in their own is not always an absolute law.