Sonshin is a young high school boy in China who finds himself caught up in an ancient battle between the forces attempting to revive the emperor Kentei and who would stop them. A mysterious benefactor gives him a choice of cards, which will allow him to summon warriors from the romance of the three kingdoms to do his bidding. He summons the great general Shuuyu, but very quickly finds out that the game is more deadly than he bargained for...
Chou-sensei continues to pursue Shuuyu and Sonshin throughout the school. Sonshin lacks the spiritual power needed to fully use Shuuyu's abilities, so he has no choice but to flee. The situation grows even more dire when the two of them are trapped on the roof, and Gien destroys the fire escapes, leaving them nowhere to run...
Trapped on the roof, Sonshin has nowhere to run against Chou-sensei. He's forced to fight, but his spiritual power is weak. He attempts to surrender to spare Shuuyu any further pain, but as her armor glints in the setting sun, it seems he has another plan in mind...
With Chou-sensei defeated, the real bad guy is revealed: Hakuanshi, a servant of Kentei who was manipulating him for his own purposes. Hakuanshi uses more powerful generals, and more than just one. Even with the help of his mysterious classmate Ryofu, Sonshin has no choice but to flee. But Hakuanshi isn't willing to let him go easily...
Ryouun and Sonshin continue to fight against Hakuanshi's generals. Sonshin's spiritual energy is beginning to run out, and it won't be long before he's completely dry. But even after he temporarily repels this foe, he still has to deal with a reckless and angry Shuuyu, who blunders straight into a trap...
